The invention discloses a tongue depressor for pediatrics, which comprises a support arm pair, comprising a first support arm and a second support arm, wherein the first end of each support arm is rotatably connected with each other through a common rotating shaft; a first tooth clamping part is rotatably arranged on the first support arm and is used for clamping the upper row of teeth of the children; a second tooth clamping part is screwed on the second support arm and is used for clamping the lower row of teeth of the children; the tongue blade is arranged on the end head of the second endof the second support arm; a support frame is connected to the second support arm; a drive rod is arranged close to the common rotating shaft and opposite to the two clamping parts, the first end of the drive rod is rotatably connected with the first support arm, and the second end is slidably connected with the second support arm; the first end of a push rod assembly is rotatably connected with the drive rod, and the second end passes through the support frame and is slidably supported on the support frame; a positioning spring sleeves the push rod assembly. The tongue depressor for pediatrics greatly improves the inspection efficiency and the effect, and has wide application range.