The invention discloses a photocuring stereo printing device. The photocuring stereo printing device comprises a base, a lifting sliding rail, a sliding block, a forming table, a nut assembly and a screw rod. The lifting sliding rail is vertically arranged on the base. The sliding block is arranged on the lifting sliding rail and can move along the lifting sliding rail. The forming table is provided with a positioning hole and at least one adjusting groove channel. The nut assembly is in locked connection with the sliding block through multiple screws, one of the screws penetrates through thepositioning hole and then is connected with the sliding block in a locking mode, and the rest of the screws penetrate through the corresponding adjusting groove channels and then are connected with the sliding block in a locking mode. The screw rod is vertically arranged on the base and in threaded connection with the nut assembly. Therefore, when the forming table rotates, jamming of the nut andthe screw rod due to rotating of the nut is not caused.