A trolley used in a supermarket comprises a frame formed through plastic molding, a trolley body jointly composed of a bottom frame piece, a front frame piece, a rear frame piece, a left frame piece and a right frame piece and enclosing a trolley body cavity, and a child seat, and is characterized in that a trolley body supporting seat is arranged at the end, facing the left frame piece, of the frame, a bottom frame piece supporting seat embedding cavity is formed in the upward side of the trolley body supporting seat, a bottom frame piece supporting seat is arranged at the bottom of the end, facing the left frame piece, of the bottom frame piece, the end, facing the rear frame piece, of the bottom frame piece supporting seat extends to the bottom of the rear frame piece, the end, facing the right frame piece, of the bottom frame piece corresponds to the upper portion of the end, facing the right frame piece, of the frame, the upper portion of the left frame piece is connected between a front frame piece hand-pushing rod seat and a rear frame piece hand-pushing rod seat, the lower portion of the left frame piece is a rotary free end, and the left side of the left frame piece is blocked by the upper edge of the end, facing the left frame piece, of the bottom frame piece. Resources and costs are saved, the manufacturing efficiency is high, an overall effect is good, and the trolley facilitates that heavy-weight commodities are put in or moved out of the trolley body cavity and is recyclable, good in safety, environmentally friendly and long in service life and ensures sanitation.