The invention relates to a detection-type locomotive lifting jack support head with a weighing function, comprising a support head body and a detection bearing device arranged on the support head body. The detection bearing device comprises a connection block, a bearing plate, a spring supporting plate, a spring, a mandril, a load detection limit switch and a weighing sensor. The weighing sensor is mounted on the support head body; the connection block is mounted on the weighing sensor; the bearing plate is arranged above the connection block; the bearing plate is connected with the spring supporting plate on the lower part of the bearing plate; the spring is mounted between the spring supporting plate and the support head body; the lower part of the bearing plate is connected with the mandril through a thread; and the load detection limit switch is mounted on the lateral side of the mandril. The detection-type locomotive lifting jack support head has the detection function. When out of load bearing, the bearing plate is supported by the spring so that a certain gap is formed between the bearing plate and a baffle plate. The initial state of a locomotive is used as the initial point when the whole locomotive is lifted so as to ensure the safety of the locomotive during repair. The invention has the weighing function of the whole locomotive and can save a great amount of money due to no purchase of the weighing device of the whole locomotive.