The utility model discloses a remote environmental monitoring system for fruit and vegetable greenhouses. The system is characterized by comprising a main controller, a data acquisition unit, a wireless transmission unit, a visual man-machine conversation unit and an execution unit, wherein the main controller is separately and electrically connected with the data acquisition unit, the wireless transmission unit, the visual man-machine conversation unit and the execution unit; the data acquisition unit comprises a temperature and humidity sensor and a flame alarm module; and the temperature and humidity sensor and the flame alarm module are separately connected with microprocessors, which are connected with the main controller. The remote environmental monitoring system for fruit and vegetable greenhouses is used for remotely and automatically monitoring temperature, humidity and other parameters of greenhouse planting and wirelessly and remotely controlling the temperature and humidity of greenhouse planting and is capable of monitoring environmental parameters of fruit and vegetable greenhouses in real time and preventing the occurrence of natural disasters and accidents.