The outdoor direct-buried telescopic fire hydrant is a kind of fire hydrant with the characteristics of shrinking below the ground at ordinary times and pulling out the ground to work when in use. Compared with the above-ground fire hydrant, it avoids collision and has good anti-freezing effect; Compared with the underground type, there is no need to build an underground well chamber, which is connected above the ground and convenient for work. The interface direction of the outdoor direct-buried telescopic fire hydrant can be rotated 360 ° according to the need of water connection, which is more convenient to use.