The invention relates to a fixing chair, in particular to a pediatric injection foot fixing chair. The technical problem to be solved is to provide a pediatric foot injection fixing chair capable of fixing a child's foot to avoid walking needles and also preventing the child from walking indiscriminately. A technical scheme is as follow: a pediatric injection foot fixing chair comprises an L-shaped seat plate, a solid leg, a hollow leg, a vertical slide rail, a vertical slide block, a vertical plate, a stopper, a first spring, a connecting plate, an arc plate, a clamping rod, etc.; the solid leg is installed on the left side of the outer bottom of the L-shaped base plate, the hollow leg is installed on the right side of the outer bottom of the L-shaped base plate, an opening is opened on the lower part of the right side of the hollow leg, and the vertical slide rail is installed on the upper part of the inner right side of the hollow leg. As the child is seated on the L-shaped seat plate and the ankle of the child is moved into the arc-shaped seat plate, the needle move caused by the foot of the child can be avoided, and the drop bottle can be prevented from falling from the L-shaped seat plate to cause the drop bottle to break.