The utility model discloses a full -automatic horizontal clamp type cell phone stand of double gear, including face lid, drain pan, left arm lock, right arm lock, support arm, double gear, back splint, its characterized in that: set up the spur rack limit respectively in left arm lock and right arm lock, the support arm left and right sides sets up perpendicular rack limit respectively, set up double gear, mesh respectively with perpendicular rack limit on gear teeth tooth and spur rack limit, every gear drives an arm lock operation alone, the clamping strength greatly increased of arm lock about making, the setting of the linkage relation of elastic component and gear and left and right sides arm lock, the automation of arm lock is opened or presss from both sides tightly about driving, cell phone stand overall structure is simple, it is tight short, the clamping cell -phone is powerful, strong stability, the specially adapted uses in the automobile that goes, its convenient operation, therefore, the clothes hanger is strong in practicability, and simultaneously, moreover, the steam generator is simple in structure, it is reliable and stable to link, it is powerful to control thearm lock clamping, the easily production preparation, be suitable for accurate wide the application and the popularization.