Abstract: Provided is a pet cat excrement screening device. The pet cat excrement screening device includes a support base; a drum rotatably mounted on the support base; and a drum driving device mounted on the support base. The drum is configured to rotate between a first position and a second position under drive of the drum driving device, where the rotation angle of the drum is less than 360 degrees. A side wall of the drum body of the drum is provided with a pet inlet. The pet inlet is exposed out of the support base during a rolling process of the drum. A screening mechanism is mounted in the drum. The rear end of the drum is provided with a waste discharge port.

Abstract: Disclosed are an excrement screening device and method. The excrement screening device includes a rotary receiving piece, a litter blocking piece and a screening piece. The rotary receiving piece is configured to receive cat litter and the rotary receiving piece is provided with a waste discharge outlet. The litter blocking piece is disposed in the rotary receiving piece and the litter blocking piece is configured to block the cat litter in a case where the rotary receiving piece rotates along a first direction. The screening piece is disposed in the rotary receiving piece, the screening piece is provided with a plurality of screening holes, and an accommodating cavity is formed by the screening piece, the litter blocking piece and the rotary receiving piece. The excrement screening method uses the above-mentioned excrement screening device.