First, you need to say hello to the interviewer. If there are teachers and classmates, you can say, "Hello, dear teachers and classmates!" "If there are only classmates, you can say," Hello, dear classmates! ".Secondly, you need to show your attitude, come straight to the point and express it without euphemism. You can say, "I am honored to be here today, just hoping to realize my wish of' I want to join the Student Union'". Then, you can go on to say, if you can join the student union in the future, what can you do, or what can you do, and what service can you provide for your classmates. You can say something like this: "You can try your best to complete the tasks assigned by the Student Union, get along well with your classmates and help them solve all problems. If students ask me for help, I will go all out to help. "

Then, you need to introduce your own advantages and disadvantages seriously, you can't exaggerate, you must be realistic, after all, everyone likes to hear the truth. For example, "your strengths are lively and cheerful, warm and generous, kind-hearted, learning to adjust contradictions among members, being able to control the court, and so on". You must seek truth from facts and tell your shortcomings seriously and sincerely. For example, "my weakness is that I am too slow." I like to do things slowly and not panic. My lifestyle is to take it slow. " I often make myself inefficient because I take my time, but the quality of my work is guaranteed. "Finally, you sincerely tell everyone that you will seriously correct your mistakes. This is the highlight of the interview. If your sincerity comes out, everyone will be infected by you, then you will have more support and you will successfully enter the student union.