Fireproof separation building structure

A fireproof separation building structure relates to the field of fireproof building structures and comprises a structure body and an external water pump, mounting grooves are formed in the left side and the right side of the structure body, and water curtain plate structures are arranged on the left side face and the right side face of the structure body. The boron flame-retardant plate is of a detachable structure and can be replaced, when a certain high temperature is reached in the using process, the boron flame-retardant plate can be decomposed to generate flame-retardant gas, meanwhile, when the temperature detector detects that open fire appears outside, the external water pump can be started, cooling water is discharged from the highest position of the internal pipeline through the external pipeline and the internal pipeline, and the cooling water is discharged from the highest position of the internal pipeline. A water curtain is formed through the water curtain flow channel, the very good fireproof