Implementation method for grade-based passive registered real-name alumni service

The invention relates to a network system registry method and provides an implementation method for a grade-based passive registered real-name alumni service. On a basis of a mathematical set theory, the method expands a real-name user group step by step so as to construct a real-name social network. The method divides an alumni SNS (social networking service) website into a few levels from top to bottom, namely a system level, a school level, a college level, a grade level and a user level. Basic registration information is input on a basis of the grade level, a grade administrator sets a uniformly initial password for member users in the grade level, and common users enter an activated page of the alumni SNS system to complete passive registration based on a real name and an initial password. The invention realizes a real-name alumni SNS website in a grade-based passive registration mode, provides a simple login mode for alumni, and realizes a real function of finding a person, thus real-time services can be well provided for alumni and a real-name social website can be truly created.