In the construction industry, interior decoration and other industries, nail fixing is common seen. Because of low efficiency of manual nailing and large volume of pneumatic tools, the appearance of portable gas nail gun becomes popular in the industry. The gas nailing gun starts to work through the high pressure gas produced by the gas explosion. The DC motor is applied to the devices including gas mixing, exhauster and launcher of the nailing gun, which is of great importance on the performance of the nailing gun. China Micro Motor has specially developed iron core carbon brush motor, coreless motor and brushless motor with good impact resistance for gas nail gun, which can meet the need of high pressure inside gas nail gun.