In the planning of modern urban construction and industrial plant areas, although the drainage system is often hidden underground, it is related to the overall safety. A well-designed drainage ditch is not only a channel for diverting rainwater and wastewater, but also a key defense line to ensure the durability of infrastructure and prevent waterlogging and environmental pollution. As a professional enterprise that has been deeply involved in the field of drainage engineering for many years, we are well aware that excellent drainage ditch design is not simply about "digging trenches and laying pipes", but a systematic engineering that requires comprehensive consideration of multiple factors such as hydrology, mechanics, materials, and environment. Below, we have extracted the five core points of drainage ditch design to provide professional reference for the safety and long-term operation of your project.