The invention discloses a processing method, device and system of mass log information. A client end is used for filtering collected newly-increased log information, the transmission bandwidth occupied by invalid log information can be reduced when the log information is transmitted, the log information with high real-time performance is transmitted to a server in real time, the log information with low real-time performance is delayed to be transmitted to the server, and the collecting cycle of the log information can be effectively shortened. The logic server transmits warning log information to a warning processing device timely, the demand for timely outputting the warning information in the log information can be met, non-warning log information is stored to different storage positions, the types of the log information correspond to the operation types of operation to the log information, so that in the process that a log operation platform conducts operation on the log information, the storage positions of the log information can be judged according to the operation types, the processing time of log data operation can be quickly and effectively shortened, and the processing efficiency is improved.