A stain-repellent stretch net cage for farming large yellow croaker relates to a cage for mariculture of the large yellow croaker. The stain-repellent stretch net cage for farming large yellow croaker is provided with a floating system and a net system and is characterized in that the floating system is in a rectangular frame structure with double floating pipes, the net system is in a combined structure of a longitudinal cage upper end net, a longitudinal cage lower end net and a cage bottom net; the cage bottom net is fitted on a frame wrapped with a synthetic fiber mesh, and the frame is connected with lower edge horizontal ropes of the longitudinal cage lower end net; after the longitudinal cage lower end net is connected with the cage bottom net, vertical man ropes longitudinally disposed along the longitudinal cage upper end net from upper horizontal ropes of the longitudinal cage upper end net extends to edge ropes of the cage bottom net; crossing man ropes are added to the bottom of the cage, crossing man ropes are added along diagonals of the bottom of the cage, a high-strength polypropylene rope is tied to an intersection of the two crossing man ropes arranged along the diagonals of the bottom of the cage, and a cylindrical foam float is tied to the other end of the high-strength polypropylene rope.