To make it possible to install a greenhouse even on a soft ground or the like.

The steel pipe pile for greenhouse use is installed inside a greenhouse, and a support part which supports a foundation of the greenhouse and prevents settlement and a lifting preventing tool for preventing the greenhouse from being blown away influenced by a typhoon or the like are connected to a ground surface part of the steel pipe pile. Furthermore, the pile is equipped with an air blowing device which can effectively utilize ground heat, which propagated into the steel pipe pile, in the greenhouse.