The professional quality of college students can also be regarded as an iceberg: only 1/8 floats on the water, representing the image, qualification, knowledge, professional behavior and professional skills of college students. It is a visible and dominant professional quality, which can be proved by various academic certificates and professional certificates, and can also be verified by professional examinations. The part of the iceberg hidden below the water surface accounts for 7/8 of the whole, which represents the professional consciousness of college students.