Wang Lin bled his classmate, and xu teacher scolded his father: "The child can't manage well. Do you want me to teach you? " This paper evaluates xu teacher's practice from the perspective of teachers' morality. A: xu teacher's behavior violates teachers' professional ethics and is not worth learning and advocating.

(1) Professional ethics requires teachers to care for students, respect their personality and be their mentors. In the materials, xu teacher failed to communicate with students in time and teach them to correct their mistakes, and failed to care about students.

(2) Teachers' professional ethics requires teachers to teach and educate people, follow the laws of education, implement quality education and teach students in accordance with their aptitude. In the material, Mr. Liu did not do this. He didn't have the patience to discover the advantages and disadvantages of his students, didn't guide them and didn't respect him.

(3) Teachers' professional ethics requires teachers to be teachers, be strict with themselves, set an example, have standardized language and behave in a civilized way. In the material, Mr. Liu hurt Wang Lin's father in front of everyone, which is very disrespectful to students and their parents. The teacher didn't set a good example for the students to learn well.

To sum up, Mr. Liu's moral concept of caring for students, teaching and educating people and being a teacher is not worth learning and learning from.