Safety gate for iron tower

The utility model discloses a safety gate for an iron tower. The safety gate comprises a plurality of support frames, a metal gauze and a fixed frame. The metal gauze is fixedly arranged through the support frames and the fixed frame to form a fence. A door is arranged on the fixed frame. The safety gate for the iron tower is arranged on principal materials in four corners of the iron tower. A worker opens an upper door lock channel and a lower door lock channel through a special key, and enters the iron tower for work; and after finishing the work, the worker locks the door when leaving, so that the condition that a person privately climbs onto the tower to steal a great number of devices and equipment on the iron tower is completely eradicated, and the standard management of power maintenance and standard maintenance are guaranteed.