PCB (Printed Circuit Board) coating jig capable of being completely packaged

The utility model discloses a PCB (printed circuit board) coating jig capable of being completely packaged, which relates to the technical field of jigs, and comprises a supporting plate, a retainer ring is arranged on the top surface of the supporting plate and close to the edge, two groups of grooves are symmetrically arranged on one side of the top surface of the supporting plate, and the two groups of grooves are arranged on the other side of the top surface of the supporting plate. A clamping piece is arranged at the position, located above the two sets of grooves, of the top of the supporting plate, and the two sets of grooves can be used for installing the clamping piece and can also guide and limit the clamping piece. A clamping piece is arranged on one side wall of the supporting plate, a material blocking piece is arranged on one side wall of the clamping piece and used for being matched with the clamping piece to clamp and limit a PCB placed on the supporting plate, the clamping piece comprises a c