The letter of appointment of the student union is a kind of certification material issued by the student union to students who are interested in joining the student organization during the recruitment process, which is used to confirm that the student has been hired by the student union and to explain their specific positions, responsibilities and rights. Because the content of the letter of appointment of the student union is directly related to the rights and interests of the admitted students, it is not allowed to resort to deceit at will. This violates the principle of honesty and trustworthiness, and may also have a bad influence on the student union and the admitted students. Therefore, the student union letter of appointment must be true and effective and cannot be forged.

At the same time, students' union should pay attention to protecting the privacy and personal information of the admitted students when issuing the employment letter, and ensure the information security and confidentiality of the employment letter.