An indoor greenhouse cultivation device includes a planting tank, a water supply system, a temperature control system, an auxiliary lighting system, and a humidity control system; the planting tank is provided at the bottom of the window or in the shape of a screen to plant plants; and the water supply system automatically supplies water in an appropriate amount in a timely manner. Temperature control system includes exhaust fan, heat fan, temperature sensor and constant temperature system control box to timely adjust the temperature; auxiliary lighting system includes plant lights and reflectors, installed in the periphery of the planting tank, to provide lighting in the absence of sunlight, so that plants Photosynthesis, and by the refraction of light to show a beautiful landscape; humidity control system with the exhaust fan and adjust the humidity and reduce the indoor temperature.