The invention discloses an amorphous alloy single-phase oil immersed power distribution transformer, which comprises an oil tank composed of a tank wall and a tank cover, a transformer body arranged in the tank and transformer oil filled around the transformer body, wherein a pressure relief valve is included also. A cavity is arranged between the upper end surface of the transformer oil and the bottom surface of the tank cover, the pressure relief valve is equipped on the tank wall located in the cavity, and the body of the single-phase transformer comprises an amorphous alloy iron core and a transformer coil. The invention has the advantage that the transformer body utilizes the structure of amorphous alloy iron core frame, and the pressure relief valve is equipped on the tank wall, thereby capable of preventing the oil tank from deforming or bursting after the temperature of the coil rises and the volume of the transformer oil expands.