The removable gooseneck trailer has outstanding flexibility, and the gooseneck part can be easily disassembled to meet different transportation needs. When it is necessary to transport conventional goods, the gooseneck can be removed to increase the cargo space and improve transportation efficiency; when transporting special goods such as large machinery and equipment, the gooseneck can be installed to improve the vehicle's traction stability. The body adopts a lightweight design, which reduces the weight of the whole vehicle without affecting its load-bearing capacity, effectively saving fuel consumption. The detachable gooseneck trailer's connection device is reasonably designed, and the installation and disassembly operations are simple. It can be completed with only a small amount of manpower and simple tools, which greatly shortens the operation time and is favored in agricultural and industrial transportation scenarios.