Underwater fixing pile of stable water photovoltaic platform

The invention relates to the technical field of underwater fixing piles, and discloses a stable underwater fixing pile for an overwater photovoltaic platform, the stable underwater fixing pile comprises a pile body and an adjusting cylinder vertically arranged in the pile body, and the surface of the top end of the adjusting cylinder is provided with an external thread; and the bottom end of the adjusting cylinder penetrates through the pile body and extends below the pile body. The stable supporting mechanism is arranged, the distance between a first positioning sleeve and a second positioning sleeve is reduced or increased by rotating an adjusting cylinder, the multiple stable claws are further unfolded and folded, the multiple stable claws are drilled into the water bottom during unfolding, operation is easy, and the fixing stability is improved; when the stabilizing claws are tightened, the stabilizing claws are convenient to store, related workers can be protected from being accidentally injured by the t