The invention provides a detection device for electrical automation equipment, which relates to the technical field of detection devices and comprises an assembly line frame body, a fixing part, a marking part and a detection part, two rolling shafts are rotationally connected to the assembly line frame body, and the two rolling shafts are sleeved with a conveying belt. Through the arrangement of an air pipe, a collecting opening and an impeller, the impeller is mounted on the rolling shaft on the front side; an air pipe is inserted into the frame body, and the tail end of the air pipe is aligned with the detection position of the electrical equipment; a collecting opening is formed in the head end of the air pipe, and the collecting opening is aligned with the impeller, so that wind power generated when the impeller rotates can be collected through the collecting opening and then sprayed out through the air pipe, dust removal of the detection position of the electrical equipment is finally achieved, the detection effect is improved, and the problem that although an existing device is provided with a limiting structure, dust cannot be removed is solved. However, the protective capability is weak, and damage is easy; and secondly, a threaded rod of an existing device is easy to loosen after being adjusted, so that the detection precision is influenced.