The invention discloses a PU foamed sole swing mold mechanism including a shoe mold, a front-and-back swing mold supporting reset system, a left-and-right swing mold supporting reset system, a shoe mold supporting mechanism, a left-and-right swing mold servo system, a front-and-back swing mold servo system, a pneumatic positioning system and a device bracket; the top end of the device bracket is fixedly provided with the shoe mold supporting mechanism; the top end of the shoe mold supporting structure is fixedly provided with the shoe mold, and the front-and-back swing mold supporting reset system is connected below the shoe mold; the front-and-back swing mold supporting reset system is connected with the underneath front-and-back swing mold servo system through a locking mechanism, the left-and-right swing mold supporting reset system is located below the front-and-back swing mold supporting reset system and is connected with the front-and-back swing mold supporting reset system; theleft-and-right swing mold servo system is connected with the underneath pneumatic positioning system. The PU foamed sole swing mold mechanism has reasonable structural design, effectively improves theautomation degree of the PU foamed sole automation production line and reduces the production cost.