The invention discloses a complicated road condition electric vehicle search-and-rescue system and a complicated road condition electric vehicle search-and-rescue method based on an Internet of Thingstechnology. According to the complicated road condition electric vehicle search-and-rescue system and the complicated road condition electric vehicle search-and-rescue method, electric vehicle driving real-time data is acquired by means of data acquisition terminals distributed at Internet of Things nodes of each electric vehicle, and the acquired real-time data can be transmitted to a backgroundserver; and the background server calls a stored electric vehicle search-and-rescue model and an electric vehicle operation effect evaluation algorithm model, combines the real-time data of the electric vehicles, determines a failure state of a corresponding electric vehicle, and configures a search-and-rescue scheme. The complicated road condition electric vehicle search-and-rescue system and the complicated road condition electric vehicle search-and-rescue method are combined with the Internet of Things technology, and solve the search-and-rescue problem of vehicles to be rescued under a highway complicated condition. Through the research of the system and the method, the operation effect of the electric vehicles can be effectively improved and enhanced, and the complicated road condition electric vehicle search-and-rescue system and the complicated road condition electric vehicle search-and-rescue method have good social benefits.