Inside-collecting extrusion soap box

The invention discloses an inside-collecting extrusion soap box and belongs to the field of soap boxes. The inside-collecting extrusion soap box can integrate a soap box and a soap to effectively prevent direct contact between a hand of a user and an end face of the soap to further effectively avoid waste of the soap. In addition, by changing the outward-turning degree of an outward-turned layer,the part of the soap, which is exposed from a housing of an inner layer, can be enlarged when the soap is relatively short in a later period of use to further improve the use efficiency of smaller soap. In the meanwhile, the soap that turns smaller in the later period can be directly collected inside the housing of the inner layer so that a soap will generate an extrusion force to the soap collected inside each time in use to improve the bonding degree between the soap and the soap collected inside. Under the action of the inside-collected soap, the distance that the new soap enters the housing of the inner layer will