The invention discloses a multifunctional pediatric clinical diagnosis device and belongs to the field of medical equipment. The device comprises a child protective chair as well as a memory detectiondevice, a body temperature detection device and an oral cavity detection device which are mounted on the child protective chair, wherein the child protective chair comprises a base, a support column,a sitting board and a ring fence, and the ring fence comprises a main handrail and an auxiliary handrail which are hinged with each other; the memory detection device comprises an arc-shaped slide rail, two ends of the arc-shaped slide rail are mounted at upper ends of telescopic rods on two sides respectively, and sliders and candy boxes connected with the sliders are arranged in the arc-shapedslide rail; the body temperature detection device comprises an infrared sensor located right above the sitting board; the oral cavity detection device comprises an outside-mouth limiting part, a middle barrel and a bag, inner holes in the outside-mouth limiting part and the bag are communicated with two ends of an inner hole in the middle barrel respectively, and a through hole is formed. The multifunctional pediatric clinical diagnosis device has multiple functions such as memory detection, body temperature detection, oral examination and the like and further has a function of protecting a user, and enough comfort can be provided for the user.