The invention provides a melon growth management expert system based on the Internet of Things. The melon growth management expert system comprises a main interface module, an expert knowledge base module, a monitoring information module, a growth simulation and prediction module, a decision-making and inference module, an expert consultation module, a personal information module and a backgroundmaintenance module. The melon growth management expert system manages melon real-time growth environment monitoring, growth status monitoring, water and fertilizer amount and environmental temperatureearly-warning as well as pest and disease damage judgment combined with an image recognition technology, realizes melon growth and development simulation and yield quality prediction, and is equippedwith a planting knowledge base and an expert online question answering function. The melon growth management expert system realizes real-time monitoring of environment and plant growth information, is conductive to planting decision-making, reminds the user to improve the management conditions through real-time water and fertilizer amount and environmental temperature early-warning, realizes high-precision simulation of plant growth indexes, fruit quality and yield, and provides real-time water and fertilizer precise decision-making scheme according to comprehensive analysis of real-time environment and plant growth monitoring, data processing based on a machine learning method, plant growth model prediction and the like.