The utility model discloses a slag ladle and carriage weighing device, include 1 above weighing sensor, the instrument of weighing, transmitting set, wireless receiver, data acquisition module, weigh case, transmitter case, receiver case, antenna, undersetting, upper bracket and buffer, weighing sensor installs between upper bracket, the undersetting, the undersetting is fixed on the frame of slag ladle and carriage, be equipped with buffer on the upper bracket, the instrument of weighing is installed and is being weighed the incasement, weighs the case and installs in the frame, below the motor cover plate, weighing sensor is connected through high temperature shielded cable between the instrument with weighing, transmitting set receives the weight signal of the instrument input of weighing, sends it to wireless receiver through the antenna, wireless receiver is through high temperature shielded cable with received weight signal output to data acquisition module. The utility model discloses can realize the slag ladle and carriage on line, weigh in real time, acquire the accurate weight of slag in the slag ladle, convenient to use.