The utility model relates to a train insulation and conduction testing technology, in particular to a special collection device for a load detection signal channel. With the device of the utility model adopted, the problem of large detection workload and low detection efficiency of an existing train load state detection method can be solved. The special collection device for the load detection signal channel comprises a cabinet part and a detection part, wherein the cabinet part comprises a cabinet body and a cabinet cover, and the detection part comprises an MCU, a data acquisition card, a data acquisition interface, a carrier communication chip, a carrier communication interface, a keyboard, an LCD display scene, an LED indicating light, a rechargeable polymer phosphoric acid iron battery, a charger and a charging interface; the top end of the cabinet body is provided with an exposed opening; the cabinet cover is hinged on the exposed opening of the top end of the cabinet body; the MCU is installed at the inner top surface of the cabinet cover; and the data collection card, the carrier communication chip, the rechargeable polymer phosphoric acid iron battery and the charger are respectively installed at the inner bottom surface of the cabinet body. The special collection device for the load detection signal channel of the utility model is suitable for train insulation and conduction testing.