The utility model relates to the technical field of insert placing and positioning. The utility model relates to an insert placing and positioning structure, in particular to a placing and positioningstructure for special-shaped or tiny inserts in plastic molds. The mold comprises a front mold and a rear mold, wherein the front mold comprises a front mold fixing piece and a front mold moving piece; wherein the front mold moving part is arranged in the front mold fixing part and can move up and down, the rear mold comprises a rear mold fixing part and a rear mold moving part, the rear mold moving part is arranged in the rear mold fixing part and can move up and down, and compared with the prior art, the combined structure is simple and feasible and is easy to assemble and disassemble.