Fecha de publicación: 18/06/2019 Fuente: Wipo tomato The embodiment of the invention provides a monitoring and early warning method and device for tomato stem rot. The method comprises the steps that the temperature and soil humidity of the place wheretomatoes are located are collected; inputting the temperature and soil humidity of the place where the tomatoes are located into a tomato stem rot probability model, and outputting the occurrence probability of the tomato stem rot; and giving an early warning alarm according to the occurrence probability of the tomato stem rot. According to the embodiment of the invention, the occurrence probability of the tomato stem rot is calculated in real time by collecting the temperature and soil humidity of the place where the tomato is located and combining the pre-established tomato stem rot probability model, so that the real-time monitoring of the tomato stem rot is realized. According to the method, early warning is carried out on the stem rot of the tomatoes according to the occurrence probability of the stem rot of the tomatoes, the accuracy of early warning of the stem rot of the tomatoes is improved, planters can be effectively reminded to carry out agricultural prevention and treatment work, the stem rot of the tomatoes caused by too large soil humidity and too high temperature in a greenhouse can be prevented in advance, and therefore the production efficiency is improved.