The shopping cart washing machine includes a cart transporting means (200) which continuously transports a cart in a forward direction, a high pressure washing water spraying means (300) which washes the cart by spraying high pressure washing water to a surface of the cart, a handle washing means (400) which washes a handle (4) of the cart by brushing upper and lower surfaces of the handle (4) of the cart, a cart outside surface washing unit (500) which washes the outside surface of a container part (1) of the cart by brushing the sides of the container part (1), a cart inside space washing means (600) which is disposed inside the container part (1) and removes dirt from the container part (1) by vertical vibrations, a rinsing means (700) which removes dirt remaining on the surface of the washed cart by spraying high pressure washing water again, and a drying means (800) which removes water droplets remaining on the surface of the washed cart using hot air.