A quick connector structure for a pneumatic valve contains a body, at least one locking unit, and a control set. The body includes at least one inserting hole and an air intake, wherein an airtight washer is fixed between the at least one inserting hole. The body also includes at least one through orifice. The at least one locking unit includes at least one limiting block, each of which has a retaining segment with plural locking teeth and has a defining segment, and between each limiting block and the at least one through orifice is defined a closing ring to close an air flowing gap between each limiting block and the at least one through orifice. The control set is fitted with the body and alternatively presses the defining segment to control each limiting block to move into and to position in the at least one inserting hole.