A gooseneck-shaped semi-trailer comprises a carrying bench with a plurality of fixing devices, a gooseneck-shaped longitudinal girder, a walking mechanism, a traction device and a support device arranged below the carrying bench; a cross beam in an identical width with the carrying bench is arranged on the tail end of the gooseneck-shaped longitudinal girder; moreover, a tail end fixing mechanism in the fitting height and position of the fixing device on the carrying bench is arranged on the two ends of the cross beam respectively. The utility model of the gooseneck-shaped semi-trailer can make load better distributed on the overall gooseneck-shaped semi-trailer, so as to lower the intensity requirements to the gooseneck-shaped structure; moreover, the dimension of the loaded goods is much wider, so as to improve the transport capacity of the gooseneck-shaped semi-trailer.