The invention discloses a greenhouse intelligent management system based on big data. The greenhouse intelligent management system comprises a vision unit, an admission unit, a random verification unit, an entrance guard, an environment monitoring unit, an area division unit, a basic database, a data screening end, a rule base, a target input unit, a processor, a display unit, a storage unit and amanagement unit. The visual unit is arranged at the entrance of the greenhouse and is used for monitoring a real-time image of the entrance of the greenhouse in real time. According to the invention,the face information corresponding to the visitor is obtained from the image, and then different verification is carried out on the face information, so that the situation that the face is counterfeited by a photo or in other modes is avoided; after face verification is passed, visitors can be assessed through specified random actions, the situation that one face is mistakenly recognized is avoided, supplementary verification is conducted, meanwhile, further face discrimination can be conducted, the situation that a face is counterfeited or similar is avoided, and safety is enhanced.