The L-shaped modular lifting table comprises a table body plate, an L-shaped table plate and three table leg assemblies, a containing cavity is formed in one side of the interior of the table body plate, a splice plate is arranged in the containing cavity, a fixing column is arranged between the upper side wall and the lower side wall of the containing cavity, a through groove is formed in the splice plate in a penetrating mode, and the L-shaped modular lifting table is arranged in the through groove. The parts, capable of moving to the outside of the storage cavity, of the left end and the right end of the splicing plate are splicing parts, second screw holes are formed in the two splicing parts, splicing grooves are formed in the surfaces of the left side and the right side of the L-shaped table plate correspondingly, second mounting holes are formed in the inner walls of the lower sides of the splicing grooves in a penetrating mode, and second bolts are inserted into the second mounting holes; the front side of the L-shaped table plate is connected with a fillet block through a connecting piece; according to the device, symmetrical installation of the L-shaped table board relative to the body table board is achieved, the symmetrically-installed rounded corner blocks can move to the inner side of the splicing position of the body table board and the L-shaped table board, the attractiveness of the device is improved, the use area of a table top can be increased through the rounded corner blocks, and the device has certain practicability.