A washing machine leg (800) with automatic leveling function and a washing machine are provided. The washing machine leg (800) comprises: a jacket (500); an adjusting leg (300), which is arranged in the jacket (500) and moves axially relative to the jacket; and a flexible assembly (200), which is arranged in the adjusting leg (300) and is used for accommodating a hydraulic medium. One end of the flexible assembly (200) is mounted in the jacket (500) in a limiting manner, and another end of the flexible assembly (200) is a telescopic end acting on the adjusting leg (300). The telescopic end of the flexible assembly (200) extends and contracts under action of the hydraulic medium to drive the adjusting leg (300) to move axially, thereby implementing automatic leveling. According to the hydraulic principle, the washing machine leg (800) is provided with the hydraulic medium, the washing machine feet can automatically adjust adaptively for different pressures due to the fluidity of the hydraulic medium, and the hydraulic medium is contained in the sealed flexible assembly (200), and the flexible assembly is arranged inside the adjusting leg (300) to effectively solve the problem of the leakage of the hydraulic medium and ensure the stability of the work of the washing machine feet.