Positioning module and in-module insert thereof

The invention discloses a positioning module and an in-module insert thereof, wherein the positioning module is used for positioning an insert. The positioning module comprises a lower module relatively positioned below, an upper module relatively positioned above and at least one in-module insert embedded in the upper module, wherein the in-module insert comprises an insert body, a positioning hole groove, at least one roller guide groove, and at least one roller set; the positioning hole groove is formed in the insert body and used for the insert to penetrate and position; the roller guide grooves are formed in the insert body and the roller guide grooves at least partially communicate with the positioning hole groove; and each roller set is arranged in the corresponding roller guide groove, can roll and circulate in the corresponding roller guide groove, and can protrude to the positioning hole groove to be in rolling contact with at least one side surface of the insert when the roller set is positioned at