The invention provides a fuel advanced jet design method based on a three-dimensional inward turning air inlet, and relates to a near space hypersonic vehicle. The fuel advanced jet design method comprises the steps that a three-dimensional inward shrinking air inlet geometric model is acquired according to the design requirement; a three-dimensional inward shrinking air inlet flow field structureis obtained; a long and thin fuel jet port is arranged on the inward shrinking face in the flowing direction according to the obtained air inlet flow field structure and the feature; fuel nozzles arearranged on the two sides of the long and thin fuel jet port, and the arrangement mode of the fuel nozzles is determined according to the feature of the flow field near the jet port obtained throughcalculation and the development rule of a boundary layer on the shrinking face; the jet pressure of the long and thin fuel jet port and the fuel nozzles on the two sides are adjusted, and the openingsticking states of incident shock waves of the air inlet under different working conditions are controlled. By arranging the long and thin fuel jet port and the round fuel nozzles according to the designated space distribution on the three-dimensional inward turning air inlet shrinking face, and utilizing the pre-doped length of the fuel provided by the air inlet, achievement of sufficient burningis facilitated, and the downstream burning chamber performance is improved.