The invention relates to a PROFIBUS DP communication module for realizing communication between user data and a PROFIBUS DP bus. The PROFIBUS DP communication module comprises a microcontroller, a PROIBUS DP protocol chip and a serial communication chip which are connected in sequence, and a phase inverter and a latch which are connected between the microcontroller and the PROIBUS DP protocol chip and are connected with each other. The PROFIBUS DP communication module of the invention has the characteristics of simple structure, high degree of integration, small size, reliable communication, and the like. The design complexity of an industrial field PROIBUS DP slave station is reduced. The threshold for users to use the PROIBUS DP technology and the development cost of the technology are reduced. Product integration and rapid product development are facilitated.