The hydraulic modular trailer consists of multiple standard modules, which can be flexibly combined according to the weight, size and shape of the goods. Each module is equipped with an independent hydraulic suspension system, which can realize the lifting, steering and swinging of the vehicle to adapt to different transportation scenarios. The hydraulic axle modular trailer is made of high-strength steel, has a strong load-bearing capacity, and can transport oversized and overweight goods, such as large transformers, chemical equipment, etc. Hydraulic modular semi-trailer is easy to operate. Through the advanced control system, the driver can easily realize various actions of the vehicle, which improves the transportation efficiency and safety. It is widely used in the transportation of large industrial equipment.