The invention discloses an automatic precise fertilizer applicator testing platform and method, and relates to the technical field of integration of water and fertilizer, which is mainly used for providing testing means to researching and producing automatic precise fertilizer applicators and providing accurate performance parameters to users to enable the automatic precise fertilizer applicator to better serve for agricultural production. According to the technical scheme, the testing platform comprises a main pipe, a water source, an irrigation pump, a filter, an automatic precise fertilizerapplicator, a main pipe regulating valve, a fertilizer solution supply system connected with the automatic precise fertilizer applicator, an information collection system for detecting various parameters in the process of using the automatic precise fertilizer applicator, and a measurement and control system which is used for controlling equipment operation and analyzing each parameter in the equipment operating process.