The invention discloses an abnormal information collection method and system of relay protection equipment. The method is implemented according to the steps of generating an abnormal information collection script of target relay protection equipment, building an action sequence, building connection with the target relay protection equipment, sequentially issuing each action of the action sequenceto a master processor of the target relay protection equipment, awaiting a response result of returning to execute the action sequence of the master processor of the target relay protection equipment,and storing the response result in a file and displaying abnormal information in an output response result if the response result is received. The system comprises program modules, a client and the target relay protection equipment, wherein the program modules are completely corresponding to the steps of the method, and the client is used for executing the method. By the method and the system, abnormal data can be rapidly and safely acquired by a key, classification and display are provided, an operation and maintenance worker and a factory technician are convenient to timely analyze and diagnose, and a secondary potential risk brought by manual misoperation is prevented.