The present invention relates to an auto-switching spraying apparatus. The auto-switching spraying apparatus of the present invention includes a pipe body including at least one nozzle branch pipe and a backflow pipe for reversing the flow of water flowing through an upper opening into a branch area and supplying the water to the nozzle branch pipe, a pad disposed at the lower portion of the branch area, and a biasing unit elastically supported by a spring from a pipe body cover, between the pad and the pipe body cover coupled to a lower opening of the pipe body to bias the pad toward the upper opening.