The utility model discloses a self-healing type waterproof power overhead optical cable connector box comprising a connector box body, a connector box body fixation mount and a self-healing type repairing device. The connector box body comprises a chassis, a cap cylinder and an inner core arranged in the cap cylinder. The inner core is installed and fixed onto the chassis through an installation baseboard. The cap cylinder is fastened onto the chassis. The connected portions of the cap cylinder and the chassis are connected through threads. The self-healing type repairing device comprises a small power supply device, repairing gas cylinders and a humidity detection device. The small power supply device comprises a solar cell panel and a storage battery pack. The number of the repairing gas cylinders is two. An atomization nozzle is arranged at the mouth of each repairing gas cylinder. A solenoid switching valve is arranged on the mouth side of each repairing gas cylinder. The humidity detection device is arranged on the installation baseboard. According to the utility model, the self-healing type repairing of the optical fiber connector box can be realized, the airtightness between the cap cylinder and the chassis can be ensured, and the optical fiber permanent head damage caused by the water entering of the optical fiber connector box can be avoided.