The invention discloses a fast preparation method and apparatus of natural gas hydrate with static supergravity, which is characterized that: a reactor is connected with an air intake route, a water inlet route and a vomit route; the air intake route and the water inlet route are all provided with compression device; the air intake route is provided with a spout; the water inlet rout is provided with a nozzle; the spout and the spout are all arranged in the reactor; the spout is arranged on the inner wall of the reactor and to the circumferential direction; the nozzle is arranged on the axial position of the upper part in the reactor; an inner cooler is arranged on the axial position of the reactor and an air vent is arranged on the upper part of the reactor. The apparatus can not only remove the hydration heat fast, but also can change the flow field of gas, liquid and solid in the reactor, so as to realize the fast renewal of the three-phase interface of gas, liquid and solid.