A kitchen waste processor includes a base including a basket which has a heater located therein. A driver rotates the basket which is pivotably supported by a support. A container is located in the basket and protrudes beyond the open top of the basket. A cover has a hole defined centrally therethrough, and a seal is located within the hole. A vacuum suction pipe or a blade shaft extends through the hole. A locking device is located between the container and the cover to seal the cover to the container. The container receives kitchen waste and bacteria therein. The heater heats the container while the container is driven by the driver to spin, so that the kitchen waste in the container is fermented under high temperature to transfer the kitchen waste into fertilizer.