Softswitch technology is different from traditional switching technology in that it can separate control and switching, achieve reasonable allocation of network resources, and dynamically manage them. Softswitch technology has flexibility and scalability. Applying it to communication engineering can not only improve system real-time and reliability, but also enhance the efficiency of operators. Therefore, operators can apply soft switch technology to fixed telephone, mobile communication, Internet communication and other fields, so as to improve communication efficiency and save construction funds. Therefore, based on the perspective of communication engineering, this paper analyzes the application value and application fields of softswitch technology, and combines case projects to analyze the practical application and development direction of this technology. It is hoped that this can provide reference for the application of softswitch technology and help the better development of Chinas communication field.