The utility model discloses a cross head for reciprocating compressor, it includes the cross head body, in this internal cross head key seat and piston rod hole offered of cross head, is equipped with the cross head crawler shoe at the excircle of cross head body, the cross head key seat is downthehole to dispose cylindrical cross head pin, its characterized in that: be equipped with on the cross head body and prevent changeing the piece, it radially sets up to prevent changeing a relative cross head pin, prevent that the tip that changes the piece stretches into in the cross head pin to with cross head pin fixed connection. The utility model discloses a cross head pin is fixed through preventing changeing, has avoided the cross head pin rotation to the wearing and tearing in key seat hole and the quality accident that results in takes place, because the cross head pin does not have the rotation, the key seat hole need not set up the bush, has simplified the cross head structure, can be applied to the complete balanced reciprocating compressor's of brand -new structure design.