The invention discloses a self-adapting-based walnut kneading type shell breaker, and relates to the technical field of walnut shell breaking. The self-adapting-based walnut kneading type shell breaker comprises a shell breaking device, wherein the shell breaking device comprises a shell breaking mechanism; the shell breaking mechanism comprises a first belt, a second belt and an adjusting device;the first belt is inclined to the second belt; a wedge-shaped shell breaking channel is formed between the first belt and the second belt; the speed of the first belt is different from that of the second belt; and the adjusting device is used for adjusting the distance and the inclination angle between the first belt and the second belt. The invention aims to overcome the defects in the prior art, and provides the self-adapting-based walnut kneading type shell breaker. Shearing force and extrusion force which are periodic are provided to walnuts between the two belts through the two belts atdifferent speeds so as to break shells of the walnuts, the distance and inclination angle between the two belts are adjustable to adapt to the walnuts in different sizes and different types, and the requirements of high shell breaking rate and low kernel breaking rate are met simultaneously.