A recreational vehicle (RV) monitoring system includes a display screen, and a rear-view camera assembly, a side-view camera assembly, a door-top camera assembly, and a reversing camera that are electrically connected to the display screen, where the display screen is detachably disposed inside an RV, the reversing camera is detachably disposed at the tail of the RV, the rear-view camera assembly is mounted at a stop lamp of the RV, the door-top camera assembly is disposed on the top of a door of the RV, and the side-view camera assembly is disposed at a turn lamp of the RV.