The invention discloses a safeguard device for a charging port of an electric automobile charging pile. The safeguard device comprises a shell, a step motor, a bin gate, a gear, a rack, guide sheets, infrared reflective proximity switch sensors, Hall sensors, magnets and a singlechip control circuit; the shell and the guide sheets are fixed on the inner wall of the charging pile, the shell is provided with a straight opening matched with the guide sheets to form a guide mechanism, and the bin gate is arranged in the guide mechanism; the gear is arranged on a shaft of the step motor, and the rack matched with the gear is arranged on the bin gate; the two infrared reflective proximity switch sensors are arranged on the inner wall of the charging pile and used for detecting complete opening and complete closure of the bin gate respectively; the magnets are arranged at the edge of the outer end face of the gear, and the Hall sensors are arranged at the corresponding positions; and the infrared reflective proximity switch sensors, the Hall sensors and the step motor are connected with corresponding ports of the singlechip control circuit respectively. The safeguard device is safe, reliable, low in energy consumption, simple in structure and convenient to operate.