The invention relates to a protective shoe for increasing the construction safety of power transmission and transformation engineering. The protective shoe comprises a shoe body and a light-emitting device and is characterized in that the light-emitting device comprises a controller and an electric light-emitting piece, the electric light-emitting piece is arranged on the surface of the shoe body,the controller comprises a pressure switch, a power supply and a relay, the coil of the relay, the pressure switch and the power supply form a closed loop, and the normally closed end of the relay, the public end of the relay, the electric light-emitting piece and the power supply form a closed loop. Compared with the prior art, the protective shoe has the advantages that the relay is added, thenormally closed end in the secondary loop of the relay is connected into the electric light-emitting loop, the coil of the relay is connected into the pressure switch loop, and accordingly, the electric light-emitting piece can emit light when the shoe loses pressure, and the fact that a worker needs help can be timely discovered.