The invention discloses a pestle and mortar with a cover lid, and belongs to the field of kitchenware. The pestle and mortar with the cover lid can prevent food from spilling out. The pestle and mortar comprises a mortar body and a pestle body, a colloid elastic retainer ring comprising a bayonet penetrates through the middle section part of the pestle body in a sleeving mode, a cylindrical helical compression spring is connected into the bayonet of the retainer ring, the disc-shaped cover lid with the diameter larger than that of a mortar opening is connected to the lower end of the spring, the cover lid is arranged on the pestle body through a circular hole formed in the center of the cover lid in a sleeving mode, and the distance between the cover lid and the lower end of the pestle body in the relaxed state of the spring is smaller than the depth dimension of the mortar body. The pestle and mortar with the cover lid is suitable for various pestles and mortars.