The invention discloses a tunnel full-section waterproof plate paving structure in a corrosive stratum. The waterproof plate is integrally in a U shape and is tightly attached to the outline of the section of the inverted arch of the tunnel to be paved, and completely covers the section of the inverted arch of the tunnel; and the plurality of waterproof plates are sequentially welded and fixed along the mileage direction of the corrosion section of the tunnel, and the left end and the right end of each waterproof plate are provided with adjustable fixing devices, each adjustable fixing devicecomprises an elastic bolt, a C-shaped clamp, a 7-shaped steel angle, turnbuckles, an L-shaped steel angle, and anchoring steel bars, the L-shaped steel angle is horizontally placed on the plurality ofanchoring steel bars, and the plurality of turnbuckles are sequentially arranged at intervals in the width direction of the waterproof plates, the upper ends of the turnbuckles are hooked on the L-shaped steel angle, and the lower ends of the turnbuckles are hooked on the 7-shaped angle steel. The full-section waterproof plate paving structure is economical, effective and rapid in construction, so that the adverse influence on the durability of the steel bars and the concrete of the tunnel supporting structure caused by invasion of the corrosive groundwater can be effectively solved.