Abstract: The occurrence and spread of livestock diseases are closely related to the breeding environment. Achieving accurate perception and intelligent regulation of the environmental information of the barn is the key to improving animal health and production performance, which is of great significance to enhance the high-quality development and transformation of livestock industry in China. Starting from four aspects including the indicator system of the livestock barn breeding environment, accurate perception technology and methods, environment optimization control strategy and comfort assessment, this paper introduces the environmental indicators affecting the livestock health, livestock barn breeding environment monitoring equipment, wireless data transmission optimization technology, and elaborates on the research of environmental data prediction models and distribution laws. It also focuses on analyzing the research and development status of optimization design of livestock barn control equipment, multi-environmental parameter regulation and control, and environmental comfort assessment models, etc. Finally, it summarizes the problems existing in the current application of intelligent monitoring of livestock barn environment and looks forward to the future development direction of intelligent monitoring of farming environment, with the aim of providing references for the comprehensive development of intelligent animal husbandry and improvement of production efficiency in our country.