The side curtain box-type semi-trailer is also known as the side curtain semi-trailer. Due to the fact that both the left and right sides as well as the rear of it can be opened, the process is simplified. The tarpaulin can be detached, which is very convenient and facilitates the loading and unloading of goods. Moreover, the tarpaulin is relatively inexpensive, which can reduce the production cost and enhance the market competitiveness. Compared with exposed transportation vehicles, it can prevent rain, dust, heat insulation, ensure safety and be environmentally friendly, making it a round-the-clock transportation tool. This type of vehicle once became the dominant model in foreign road cargo transportation and is also a major trend in the current box-type transportation vehicles. Therefore, it is suitable for the rapid loading and unloading of various items and is very popular abroad.