Rotary fire hydrant is an indoor fire hydrant whose body can rotate 360 degrees horizontally relative to the base connected with the water inlet pipe. It has the characteristics of relative rotation between the bolt body and the base, so it can be installed in the ultra-thin box, making it possible to reduce the thickness of the box. When the fire hydrant is not in use, the water outlet of the hydrant body can be rotated to be parallel to the wall to close the box door; When in use, screw out the water outlet of the bolt body perpendicular to the wall to connect the water hose for easy operation.