During the installation process of electromechanical installation projects, equipment commissioning, testing, trial operation, and acceptance are important steps in project management. In particular, many small and medium-sized electromechanical equipment are frequently used in electromechanical installation projects. Although small in size and relatively simple to install and debugg, it has many supporting components and corresponding standards; The installation and commissioning of large-scale electromechanical equipment involves more coordination and management of personnel, machinery, materials, and energy, which brings objective difficulties to the installation and commissioning of such equipment. This article summarizes common technical issues encountered in the installation and commissioning of electromechanical equipment, in order to better promote the resolution of installation problems in the engineering field.