The utility model particularly discloses a pediatric tongue depressor which belongs to the field of a medical appliance and comprises a handle and a depressing plate. The pediatric tongue depressor is characterized in that: a lighting lamp is arranged at the end of the depressing plate, a power supply connected with the lighting lamp is arranged in the handle, and a switch connected with the power supply is arranged on the handle. The pediatric tongue depressor has a simple structure, is convenient to use, adopts reasonable design, is flexible to apply, is clean and sanitary, can be used for effectively preventing cross infection and is suitable for wide popularization and application.