The utility model relates to a multifunctional automatic plant cultivating device, which comprises a box body and a main control computer, wherein a to-be-cultivated plant is put in the box body, sprinkling equipment and a telescopic heat insulation cover are arranged above the to-be-cultivated plant in the box body, the side wall of the box body is provided with a sensor, the sensor is used for collecting environment information of the interior of the box body, and the sensor is connected with the main control computer in a wired or wireless way. The device has the advantage that the to-be-cultivated plant is put in the box body which is provided with the sensor for detecting the environment information, the environment parameter in the box body is adjusted by the main control computer according to the feedback environment information, and then the environment in the box body can meet the plant growth requirement; in addition, a sensor feedback technique and a network control technique are adopted to read the environment data in real time, so the plant can be more scientifically and effectively cultivated, and the problem of domestic plant cultivating without attending of people is well solved.