College students' ID photos are often prepared in three colors: red, blue and white, of which blue is more commonly used and white is less commonly used. Students who have just entered the university can prepare more red and blue ones. After all, universities may need ID photos at any time.

1, white background: used for passports, visas, driver's licenses, ID cards, second-generation ID cards, driver's licenses, black and white documents, medical insurance cards, Hong Kong and Macao passes, etc.

2. Blue background: used for graduation certificate, work permit, resume, etc.

3. Red background: used for insurance, medical insurance, IC cards, temporary residence permits and wedding photos.

Requirements for college students' ID cards:

1. The photo of the student ID card is generally 2 inches or 1 inch. It is the identity certificate issued by the school to the students who have obtained the student status when they enter the school. One-inch color or black-and-white photos of myself stamped by the school are not allowed to be drawn at will.

2. One-inch photos must be recent bareheaded color headshots, and the headshots account for 2/3 of the photo size, with clear images and rich layers, natural expressions and no obvious distortion, and the photo size is 32mmX26mm. Two-inch photos (a 5-inch top row of four photos) are 3.5*5.2cm, and the resolution is above 600*400.

3. The student round-trip ticket management method tells us that you can buy four round-trip train tickets from home to school every year with your student ID card. Hard seat tickets, expedited tickets and air-conditioned tickets all enjoy 50% discount: 7.5% discount for second-class seats of EMU. Freshmen buy student tickets with the admission notice, and graduates buy them with the written certificate of the school.