Abstract: PHC pipe pile is widely used in photovoltaic projects because of its short construction period and low cost. However, under the strong corrosive environment of saline-alkali beach, if no anti-corrosion measures are taken, its durability cannot be guaranteed. According to the characteristics of PHC pipe pile, through the investigation and research of concrete anticorrosion technology, combined with its corrosion mechanism, from the two aspects of PHC pile material and outer protection, the anti - corrosion strategy of photovoltaic PHC pipe pile under strong corrosion environment of saline-alkali beach is put forward. This work provides a reference for the selection of anti-corrosion scheme of PHC pipe pile in this environment. And it has been applied in practical engineering. At the same time, seeking for more cost-effective anti-corrosion programs will also be our next focus.