The invention discloses a special bed for physical examination of infants and young children, and relates to the technical field of young children physical examination. The bed comprises a bed body, asoft cushion, a head circumference measuring mechanism, a water replenishing mechanism and an inflation pillow, the soft cushion is slidably connected with the top of the bed body, the head circumference measuring mechanism is fixedly installed on the side, away from the soft cushion, of the bed body, the water replenishing mechanism is fixed to the left side of the bed body, the inflation cushion is fixedly connected with the left side of the top of the soft cushion, and the head circumference measuring mechanism comprises a panel body, a ring body, an annular groove, a rotary ring, clampingteeth, a gear and the like. The bed has the advantages that a contacting member is arranged in the head circumference measuring mechanism, the operation time of the water replenishing mechanism is increased, the adjusting effect on the contacting member is achieved, warm water is added to the water replenishing mechanism, so that the part, contacting with the infants and young children, of the contacting part is warmer, the irritation on the skin of the infants and young children is reduced, and the crying of the infant and young children is avoided.