According to the development trend and application characteristics of turbofan engine assembly technology, the three advanced processes of overall assembly, intelligent tightening and assembly detection are analyzed and summarized. turbofan engine applies pulsating assembly line and multi-degree of freedom assembly platform for overall assembly to highly increase production efficiency; Intelligent tightening equipment can precisely control and monitor the fixed torque and angle of engine connecting parts to improve the connected uniformity, stability and reliability of critical rotor parts; Rotor stack optimization technology can optimize assembly position prediction and concentricity, electronic stopper can eliminate measurement error caused by different operators. The engine digital assembly is constantly introducing a variety of efficient and advanced automated intelligent equipments, and automation, intelligence, digitizing will be the future development direction of turbofan engine assembly process and equipment.