The utility model belongs to the technical field of weaving device structure technique and specifically relates to a solenoid valve and EPR's fault detection device, it includes the control box, is provided with 15 manometers and 15 and takes the lamp button on the end cover of control box, and the manometer mates between pressing the button with taking the lamp one by one, still be provided with a RKC table and a pilot lamp on the end cover of control box, be provided with in control box internal portion and lead to air through tube between one 15 hole gas tube connector, 15 hole gas tube connector and the manometer and connect gentle union coupling, at internal 24V constant voltage power supply, solenoid valve socket and the EPR socket of being provided with of control box, the utility model relates to a solenoid valve and EPR's fault detection device, simple structure can let maintenance person person's quick resolution trouble when detecting solenoid valve and EPR trouble belong to the point after the installation for maintenance speed, thereby it has ensured going on smoothly of production to have improved the maintenance quality.