Jig for surface mounting of circuit board

The utility model discloses a jig for mounting a circuit board, relates to the technical field of jigs for mounting the circuit board, and aims to solve the problems that the conventional jig is generally fixed on a flat table top or a working table in actual use, but the size of the conventional jig is fixed, so that the jig is inconvenient to mount. And the size of the jig cannot be adjusted according to the size of a fixed table top or a table top of the working table to be fixed on the working table. Comprising a jig working table plate, a jig telescopic structure is arranged on the jig working table plate, the jig telescopic structure is connected with the jig working table plate in a limiting mode, a fixing hole is formed in the jig telescopic structure, the fixing hole and the jig telescopic structure are integrally arranged, and the jig further comprises a fixing buckle. The fixing buckle is arranged on the jig working table plate, the fixing buckle is connected with the jig working table plate in a w