Household domestic garbage treatment device and method

The invention discloses a household domestic garbage treatment device and a household domestic garbage treatment method. The household domestic garbage treatment device comprises a box body, a crushing box and a solid collector; a crushing mechanism is arranged in the crushing box; a guide plate and a solid and liquid separation cylinder are arranged in the box body; the solid and liquid separation cylinder is fixedly connected with the box body through a fixed bracket; a stirring mechanism is arranged in the solid and liquid separation cylinder; the stirring mechanism is connected with a driving motor through a first transmission shaft; the other side of the solid and liquid separation cylinder is connected with the solid collector through a solid conveying pipe; the solid collector is connected with a fan through an exhaust pipe; and the bottom of the box body is connected with a liquid outlet pipe through a connecting pipe. The household domestic garbage treatment method comprises the following steps: proc