Engineering Base software (EB for short) is designed for high-complexity harness designs. EB covers the entire process from design to production by means of a central data module. The software adopts a 150% modular design method, supports variable design of connectors, modular and variable design of wires, and controls the production configuration of actual models through the combination of variables and modules. In addition, EB can also be oriented to production, configure the actual information of each individual wire harness, and automatically analyze and reassign modules, and export manufacturing-specific modules, which saves a lot of work in the production process and improves production efficiency.