Sofa with adjustable waist support

The utility model discloses a sofa with an adjustable waist support, which comprises a seat cushion, a backrest, a waist support plate and a waist support adjusting component, the waist support adjusting component is arranged in the backrest and comprises a mounting bracket, an electric push rod and a connecting rod, the mounting bracket is fixedly connected with the backrest, and the electric push rod is connected with the connecting rod. A first rotating shaft and a second rotating shaft are arranged on the mounting bracket, one end of the electric push rod is rotationally connected with the first rotating shaft, the other end of the electric push rod is rotationally connected with one end of the connecting rod, the other end of the connecting rod is rotationally connected with the second rotating shaft, and the waist supporting plate is arranged on the connecting rod; by adopting the waist support, the waist supporting strength of the waist support can be adjusted according to actual requirements, the user