The invention relates to the technical field of medical auxiliary equipment, and especially relates to an auxiliary exerciser for child health care. The auxiliary exerciser comprises a bottom plate, aseat is installed at the rear end of the top end face of the bottom plate, and an arc-shaped guardrail is connected to the edge of the top end face of the seat through a connecting rod. A plurality of first screw holes are formed in the left side wall and the right side wall of the bottom plate in an arrayed mode, arched plates are clamped to the left side wall and the right side wall of the bottom plate, through holes matched with the first screw holes are formed in the outer side walls of the arched plates, and first bolts are inserted into the through holes; and the arc-shaped plates are connected through a portal frame on the top end faces of the arc-shaped plates, a plurality of clamping grooves which are symmetrical left and right are formed in the outer side wall of the top end face of the portal frame, arc-shaped plates which are symmetrical left and right are clamped in the clamping grooves, and handheld plates are connected below the arc-shaped plates through elastic ropes.The auxiliary exerciser for child health care is reasonable in structural design, limbs of children can be exercised in different exercising modes, practicability is high, and the auxiliary exerciserfor child health care has excellent market popularization value.