A simple self-introduction when writing a resume can include the following: 1. Name and contact information: introduce your name and contact information so that the hiring officer can contact you. 2. Education background: briefly introduce your educational background, including the school you graduated from, the major you studied, the degree or certificate you obtained, and so on. Work experience: introduce your work experience, including company name, position, working hours, work content, etc. 4. Skills and specialties: introduce your skills and specialties, including the professional field you are good at, the skills you are proficient in, the honors or awards you have received, and other information. 5. Personal characteristics: introduce your personal characteristics, including personality, strengths, weaknesses, and other information. It was important to note that a simple self-introduction was only a part of writing a resume. Other content needed to be written according to the specific situation. Also, try to be as concise as possible and don't write too long and complicated.