The invention discloses a template fixing component for a precast concrete component, which comprises a plate frame, a fixed pressure plate, a movable pressure plate, a pressure plate bolt, springs and check bolts, wherein the fixed pressure plate is fixed on the plate frame; the fixed pressure plate and the movable pressure plate are in a directly facing relationship; a gap for clamping a template is formed between the fixed pressure plate and the movable pressure plate; the pressure plate bolt is in threaded connection to the plate frame; the axis of the pressure plate bolt is positioned in the width direction of the gap; the end part of the pressure plate bolt is in contact with the outside of the movable pressure plate; the check bolts are in threaded connection to the plate frame, and the axes of the check bolts are in parallel with the axis of a holddown bolt; the springs are arranged between the movable pressure plate and the check bolts; in a working state, both ends of the springs respectively suffer from pressure stresses of the movable pressure plate and the check bolts to be in an elastic compressed state. The fixture provided by the invention can achieve the technical effect of reducing a slurry leakage quantity or avoiding slurry leakage in the curing process of the precast component.