The invention discloses an evaluation system and an evaluation method for petrochemical device process safety management evaluation. The evaluation system comprises a client, an evaluation parameter configuration module, an evaluation calculation method configuration module and a device evaluation report module, wherein the evaluation parameter configuration module, the evaluation calculation method configuration module and the device evaluation report module are in communication connection with the client. A safety, process and equipment evaluation parameter system related to device operation and safety operation is built, key evaluation parameters are determined to form a process safety management evaluation model facing process operation, a petrochemical device process safety management evaluation software system is designed, researched and developed, petrochemical device process safety management performances can be quantitatively evaluated by the aid of the system, operation evaluation of device operation team workers can be quantized, practical operation levels of the team workers are compared and analyzed, and data support is provided for increasing device operation stable rate and improving operation.