It doesn't matter much if you don't have work experience. Just consider yourself a fresh graduate. You can write more about your study in school (such as the main courses you have studied and the certificates you have obtained) and the social part-time jobs or club activities you have participated in. In fact, many people are similar to you and don't know what to write on their resumes. You can also spend some time in the form of resume to make up for the lack of content. A good template can make people shine. You can search Baidu's "job resume", which will suit you.