A child safety seat includes a seat body, a reclining foot, and a force-generating member. The reclining foot is connected to a lower portion of the seat body such that the reclining foot is capable of rotating and sliding relative to the seat body to be selectively located at a first position or a second position relative to the seat body. The force-generating member is connected to the seat body and the reclining foot for applying a force to the reclining foot for urging the reclining foot to move toward the first position. When at the first position, the reclining foot can be rotated relative to the seat body and slid relative to the seat body in a distance to be blocked by a blocking structure at the lower portion from rotating reversely under the force so as to be located at the second position.