A small food cutting and blending device comprising a container with an open upper end, a botton wall and a cylindrical shaft sleeve arranged in the middle of the bottom wall, a knife rest component inside the container, the knife rest component being arranged inside the container and comprising a scraper and a knife rest, the knife rest comprising a cylindrical body with a plurality of blades being arranged on the peripheral wall of the body at different height, the small food cutting and blending device further comprising: a surface cover component configured to be mounted at the upper end of the container in a detachable manner; a gear component comprising at least one transmission gear and fixed under the container for driving the knife rest component, the gear component comprising a gear surface cover and a gear bottom cover attached to the gear surface cover, the at least one transmission gear being mounted between the gear bottom cover and the gear surface cover; a chassis with a circle of teeth arranged circumferentially on the inner wall of the chassis, the teeth being configured to engage with the at least one transmission gear so that the chassis is connected under the container and can rotate relative to the container; wherein the gear component further comprises a center shaft; teeth being arranged on the bottom of the center shaft and between the gear bottom cover and the gear surface cover and being configured to engage with the at least one transmission gear; a transmission part being arranged on the top of the center shaft, being configured to pass a through hole in the middle of the gear surface cover and a through hole on the bottom of the container in turn, and being configured to enter the container, and being fixed and connected to the knife rest component in a detachable manner; the surface cover component being provided with a handle at its upper end, the handle having a through hole communicated with the inner chamber of the container; and wherein a plurality of evenly distributed keyholes are circumferentially arranged adjacent to the edge of the gear surface cover and a plurality of corresponding lock latches are arranged on the bottom surface of the container, every lock latch being configured to be coupled with a keyhole, thereby fixing the gear surface cover to the bottom of the container. a surface cover component configured to be mounted at the upper end of the container in a detachable manner; a gear component comprising at least one transmission gear and fixed under the container for driving the knife rest component, the gear component comprising a gear surface cover and a gear bottom cover attached to the gear surface cover, the at least one transmission gear being mounted between the gear bottom cover and the gear surface cover; a chassis with a circle of teeth arranged circumferentially on the inner wall of the chassis, the teeth being configured to engage with the at least one transmission gear so that the chassis is connected under the container and can rotate relative to the container; wherein the gear component further comprises a center shaft; teeth being arranged on the bottom of the center shaft and between the gear bottom cover and the gear surface cover and being configured to engage with the at least one transmission gear; a transmission part being arranged on the top of the center shaft, being configured to pass a through hole in the middle of the gear surface cover and a through hole on the bottom of the container in turn, and being configured to enter the container, and being fixed and connected to the knife rest component in a detachable manner; the surface cover component being provided with a handle at its upper end, the handle having a through hole communicated with the inner chamber of the container; and wherein a plurality of evenly distributed keyholes are circumferentially arranged adjacent to the edge of the gear surface cover and a plurality of corresponding lock latches are arranged on the bottom surface of the container, every lock latch being configured to be coupled with a keyhole, thereby fixing the gear surface cover to the bottom of the container.