The invention discloses a self-adaptive self-adjusting multi-dimensional breeding environment quality evaluation method and system, and the method comprises the steps: collecting an optimal temperature and humidity value, a high temperature and humidity alarm value, a low temperature and humidity alarm value, a high temperature and humidity comfortable region offset percentage, and a low temperature and humidity comfortable region offset percentage of a breeding farm, and constructing a temperature and humidity evaluation model; collecting a harmful gas index value, a harmful gas high alarm value and a harmful gas volatility of the farm, and constructing a harmful gas evaluation model; and constructing a farm environment evaluation model according to the temperature and humidity evaluation model and the harmful gas evaluation model. The system comprises a data acquisition module, a harmful gas scoring module, a temperature and humidity scoring module, an environment comprehensive scoring module, a storage module, a first display module and a first communication module. The evaluation method provided by the invention is accurate, the system structure is reasonable, automatic monitoring of the farm environment is realized, and technical support is provided for the intelligent process of the farm.