The embodiment of the utility model provides a cable detection device and detection system. On one aspect, the cable detection device is in signal connection with an interface chip through a programmable logical chip and outputs a first electrical signal to the interface chip; the interface chip is in signal connection with a module interface and outputs the first electrical signal which undergoes coding to the module interface; and the module interface is signal connection with a conversion module of a to-be-detected cable and outputs the first electrical signal which undergoes coding to the conversion module. Therefore, the technical scheme is capable of detecting a cable conveniently and efficiently and reducing the detection cost of the cable.