With the large-scale development of distributed photovoltaic power generation, the use of photovoltaic grid-connected cabinets is increasing. There are many types of distribution cabinets in the domestic power supply and distribution system, and their cabinet structures and technical parameters are different. Under the influence of the following factors, the designed drawings often need to be modified or even redesigned, which not only affects the construction plan of the power supply and distribution system, but also brings certain troubles to the distribution cabinet manufacturers to complete the production of distribution cabinets on time and with quality.