The embodiment of the invention discloses a curve safety early warning monitoring method, device and system. The method comprises the following steps of inputting an obtained image of a to-be-detectedvehicle about to enter a curve into a vehicle identification composite model to obtain vehicle type information and license plate information of the to-be-detected vehicle, obtaining the braking distance and the weight of the to-be-tested vehicle according to the vehicle model information, inputting the braking distance, the weight, the road surface information of the curve, the meteorological information, the current vehicle speed of the to-be-detected vehicle, the distance between the to-be-detected vehicle and the meeting port of the curve and the number of vehicles in the opposite direction into an early warning monitoring model to obtain the safety early warning level of the to-be-detected vehicle entering the curve, acquiring corresponding curve early warning information according to the safety early warning level, and acquiring vehicle user information corresponding to the to-be-detected vehicle according to the license plate information, and sending the corresponding curve early warning information to terminal equipment of a corresponding vehicle owner user according to the vehicle user information. The system is high in monitoring precision and intelligent degree.