With the rapid development of Internet of Things and mobile communication technology, great changes have been brought to traditional agricultural production. Aiming at the fine production and management of crops in greenhouse, an intelligent green- house system based on Internet of Things is designed. Agricultural production personnel can obtain real-time and remote environ- mental data such as air temperature and humidity, soil moisture, carbon dioxide concentration, light intensity and other environmen- tal data through mobile phones and mobile terminals, and can also control multiple solenoid valves and frequency converters in or- der to improve the quality and yield of agricultural products. Remote irrigation and precise fertilization are achieved. The experimen- tal results show that the system can effectively realize the fine management of crops, help customers to improve production, reduce costs and increase revenue.