A weight measurement device comprises: an upper surface cover on which a measurement target is placed; a load cell to detect weight of the measurement target placed on the upper surface cover; a bridge to support the load cell; a receiving member to receive the weight of the measurement target placed on the upper surface cover; and a bottom surface cover provided on a lower surface side of the receiving member, and further comprises a sliding part provided between the lower surface of the receiving member and an upper surface of the bottom surface cover to enable the receiving member to move in a horizontal direction relative to the bottom cover. The bridge comprises a pivot which is a fulcrum to make it possible to change inclination of the bridge relative to the bottom surface cover and is in contact with an upper surface of the receiving member.