The invention discloses a screw storing device for precise instrument manufacturing. The screw storing device comprises a shell, wherein the top end of the shell is sunken to form an air cylinder; a piston is arranged in the air cylinder; micro pores are fully formed in the piston; an opening which is used for putting or taking out screws is formed in the top part of the air cylinder; a button cover which is used for sealing the top part of the air cylinder is arranged above the air cylinder; a through hole is formed in the bottom part of the air cylinder; a sealed air storing cavity is formed by the air cylinder and the shell; the button cover is provided with a connecting rod which stretches into the air cylinder, penetrates through the piston and the through hole in the bottom part of the air cylinder and stretches into the air storing cavity; the shell is provided with an inflatable bag which is used for inflating the air storing cavity; the shell is provided with a sandwich layer; a heating resistance wire is arranged in the sandwich layer and is provided with a silver plating layer; the sandwich layer is also internally filled with carbon tetrachloride; a window is also formed in the shell; a plurality of blind holes are also formed in the outer surface of the shell; hollow rubber bodies are inserted in the blind holes; the screws are contained in the hollow rubber bodies. The screw storing device for precise instrument manufacturing, disclosed by the invention has the advantages that the screws can be very conveniently taken out, and the screws are not easy to lose.