The utility model discloses a connecting structure suitable for a prestressed pipe pile foundation and a steel beam, which is characterized by comprising a prestressed pipe pile and a steel beam arranged at the top end of the prestressed pipe pile, the prestressed pipe piles comprise four prestressed pipe piles distributed in a rectangular shape, the steel beam is of a steel beam structure shapedlike a Chinese character'tian ', the steel beam structure shaped like the Chinese character'tian' is horizontally arranged, and the four prestressed pipe piles are fixedly connected with the four corners of the steel beam shaped like the Chinese character'tian 'respectively. According to the utility model, the steel beam structure is arranged to be a structure shaped like a Chinese character'tian'; steel beams of other parts of the steel platform are connected with the structure shaped like the Chinese character'tian 'on site, rapid and convenient construction is achieved, the construction progress is met, the construction quality is guaranteed, the technology is advanced, economy and reasonability are achieved, the quality and durability requirements of a connecting structure are effectively guaranteed, and safe and reliable operation of a photovoltaic power station within the designed service life is guaranteed.