Contingency is a common phenomenon in class groups, and properly handling contingency is an important content of class education. It is of direct and important significance to form a healthy class group and promote the all-round development of every student. Incidents are unexpected things among students, and their nature and scope are varied. The contradiction between students occurs inside and outside the classroom. Due to the occurrence of accidental events, it is often caused by potential or subtle reasons, and the class teacher often lacks due ideological preparation when dealing with accidental events. I. The remarkable characteristics of accidental events In the process of accidental events, most of them have certain "precursors" or "antecedents", and this "precursors" or "antecedents" objectively have an inevitable development process, but the development of time has undergone tremendous changes, from quantitative change to qualitative change, which makes the events reach a climax sharply. This is very surprising. Although the scope and procedures of accidental events vary greatly, from the perspective of the development of accidental events, they have greater influence than ordinary events. In schools and families, it often becomes explosive news for a time, especially some pranks and vicious incidents, which have great repercussions in schools, society and families. Therefore, it is an important task for the class teacher to deal with accidents seriously and educate the parties and perpetrators patiently and meticulously. Second, the harmful accident of the accident caused serious opposition between teachers and students, which affected the cohesion of the class organization. Accidents may be accompanied by further intensification and deterioration of contradictions. Therefore, accidents will inevitably cause serious estrangement between teachers and students, between classmates, including families or members. Leading to organizational slack and unity. In particular, group fighting, the contradiction between class cadres and the opposition between boys and girls groups are even more destructive to the unity of class collectives and seriously affect the normal operation of class organizations. Incidents have damaged the image and reputation of the class and reduced its influence. It has aroused strong repercussions and vibrations, and its harm ranges from class influence to serious social influence. Especially when accidents occur frequently, it will seriously affect and damage the long-term image and reputation of the class collective, reduce the appeal and influence of the class collective on students, and also seriously affect the direct educational role of the class teacher. Third, the handling method of accidental events must pay attention to investigation and study, and master the whole process of the incident. Investigation is the beginning to solve all problems. Due to the sudden incident, the process of development is often unknown to the class teacher. Therefore, it is very important for the class teacher to investigate and study carefully, find out the truth and solve the crux of the problem. 1, we must have a basic analysis of the accident. When dealing with the accident, the class teacher must master some basic facts and related situations, conduct preliminary analysis and research, roughly understand what kind of events the accident belongs to, grasp the crux of the problem, and grasp the nature of the problem. For example, for the fight between students, it is necessary to find out whether it is a general dispute or a gang fight. For the violation of discipline between students, it is because of the nature of being active and naughty, or because of prejudice against teachers and intentional mischief. All these should be analyzed and studied according to the situation we have mastered or learned, combined with the usual performance, in order to have a clear thinking and judgment on the events and problems, otherwise it will be impossible to investigate the accidental events smoothly. 2, investigation and study must be in-depth and meticulous investigation and study of the accident, not superficial, but in-depth, from all aspects, through various channels, comprehensive and meticulous investigation and study, seriously understand the general process of the incident, at the same time, we must also carefully investigate the subtle links of the accident's occurrence and development and the subtle changes of students' thinking. Only in this way can we clarify the time and problems. In my opinion, the investigation and study of accidental events mainly start from the following three aspects. First of all, we should focus on inquiring and investigating the parties and the perpetrators. Practice shows that with the growth of knowledge and age, students' psychology becomes more and more closed. Students are unwilling to confide in their parents, teachers and classmates when they have "worries" or "voices". Therefore, in order to find out the cause and effect of the accident, the class teacher must do a good job in the ideological work of the parties and the perpetrators, have in-depth heart-to-heart talks, try to help students lay down their burdens, inspire and guide students to open their hearts, explain the situation and delve into the ideological roots. Secondly, it is an important way to find out the development process of accidental events by investigating students and friends who have close contact with the parties and perpetrators. Because they had a close exchange of ideas and information with the people and perpetrators at that time, they were most familiar with the subtle changes in the minds of the parties and perpetrators, and were also most familiar with the inside story of accidental events. The class teacher should understand the specific process of the accident and the ideological performance of the parties and the perpetrators through the investigation of his classmates and friends who have close contacts with him. Third, we should conduct in-depth interviews with students' families. Home visits are an effective way to understand students' activities. Through home visits, we can deeply understand the students' performance in the family, especially the changes of students' thoughts, emotions, behaviors and performances in the family before and after the accident. Through family visits, we can understand students' thoughts, personality growth and changing external environmental conditions. Serious and in-depth home visits are the basic way to understand the whole process and background of accidents. 3. Handle it carefully, and let people believe that the accident is unpredictable in advance, so the class teacher can't be fully prepared for the temporary handling. Moreover, the parties and perpetrators of accidental events, such as students and students, students and teachers, students and parents, students and others in society, are in a state of extreme excitement or opposition. If we do it hastily, we will not only fail to achieve good educational results, but also bring serious negative effects. First, when dealing with accidental events, we should not only proceed from the fundamental responsibility of educators to teach and educate people, but also do a good job in students' ideological work with a highly responsible spirit. We should also adopt different and appropriate handling methods according to the nature of time, the personalities of the parties and perpetrators, and the age characteristics of students, and we must never be sloppy and stereotyped. For students who are introverted, depressed and have made unprincipled mistakes, the class teacher should conduct more individual conversations on the principle of active guidance, and sometimes do some "concealment work" for the class. For students who are grumpy and rebellious, we should be calm, persuasive, and talk to each other to prevent situations and resistance. When it comes to students' moral quality or serious violation of discipline, on the one hand, we should make the problem clear, on the other hand, we should strictly educate them to wake up. Second, we should avoid heat treatment and stick to cold treatment. Because accidents are often accompanied by students' passion and impulse, just like steel placed in a high-temperature furnace, if it is strongly heat-treated, it is like adding fuel to the fire, which will not help solve the problem, but will further intensify the contradiction. Insist on cold treatment, first of all, ask questions, ease contradictions and ease emotions. Leave some space for the students and give them a ladder to go down the steps if necessary. Not only that, the class teacher must also be good at taking pictures of students, fully understand the characteristics of students' thoughts and feelings, and be good at considering their behavior in a good way. If teachers blindly evaluate and criticize students from bad aspects, and even rudely hurt students' self-esteem, students will easily give up and have psychological confrontation. Especially when there is a contradiction between students and class teachers, teachers should show a high profile, start with checking their own work, criticize themselves more, adopt a tolerant attitude, eliminate students' fear and opposition, shorten the distance between them and eliminate the gap between them. Don't take revenge or extreme measures, just handle it casually in a moment of anger, otherwise it will heat up the contradiction. Secondly, don't rush for success, be patient and don't be impatient. Wait, take a look, give students time to unload their burdens and reflect on themselves, so as to help students cool their feverish minds and achieve the purpose of self-reflection. The cold treatment method of waiting and seeing is to choose the one with good educational effect. If students are eager for success and turn the corner of thinking, they will not achieve the expected educational effect, and "haste makes waste". We should insist on persuasion and education to convince people when dealing with accidental events. To solve the contradiction between the parties and the perpetrators and clarify the vague understanding of students' thoughts, we must seriously follow this principle. This is not only determined by the responsibility of the class teacher to teach and educate people, but also by the nature and characteristics of accidental events. Because only by adopting the way of storytelling education can we convince students and achieve the purpose of dealing with accidental events and educating students.