The utility model discloses a safe locking structure and track saw, including holding seat, operating part, linkage rod and locking post, operating part slidingly connects in holding seat, linkage rod has first transmission part, pivot and second transmission part, pivot is rotatably connected with holding seat, and pivot is located between first transmission part and second transmission part, first transmission part is transmission connection with operating part, locking post is slidably arranged in holding seat, locking post can slide to locking position and unlocking position, and locking post is transmission connection with second transmission part, wherein, operating part slides to first position, can drive locking post and slide to locking position along first direction, operating part slides to second position, can drive locking post and slide to unlocking position along second direction. Holding seat is used for user to hold and operate saw body, and user can directly complete locking and unlocking operation on the holding seat held, and operation is more convenient.