An electric anti-impact lock with spring accumulator comprises a lock shell; a pivot keeper for locking door with a latch portion and a tail portion, the door can be opened when the latch portion pivoting into the shell, the door being locked when the latch portion pivoting outside the shell; a device for locking keeper comprising a slideable block bar, the keeper is locked when the slideable block bar being against the tail portion, the keeper is turnable when the slideable block being moved away; a anti-impact device having a reinforce structure, which bears a impact from the door through the keeper and the block bar; and a device for locking block bar is a block pin device with spring accumulator, the block pin shoots out to stop moving of the block bar when power on, thereby, the door being locked, the block pin withdrawing to free the stop when power on in reverse pole, the door can be opened. The new lock solves the problems of weakness and lock death for current electromagnetic locks in market. The cost of the new lock is lower and the manufacture is easy.