Attendance registration method and device

The invention discloses an attendance registration method which comprises the following steps: S10, a server generates attendance registration serial numbers according to stored attendance registration demand information and current time information to update attendance registration serial numbers in the default cache area, and then sends the generated attendance registration serial numbers to a first user terminal, so that the first user terminal can generate and display attendance registration graphic codes according to the received attendance registration serial numbers; S20, the server judges whether an attendance registration request is received or not, wherein the attendance registration request is sent by a second user terminal within the preset time threshold according to the attendance registration graphic codes and carries the attendance registration serial numbers which are the same as that in the current cache, if yes, the server executes the S30, otherwise the server moves on to execute the S10;