Abstract: The preparation of gas hydrate in a novel rotating packed bed reactor was investigated. At 5 MPa and 277.15K，the experiments were conducted to examine the effects of high gravity factors β，liquid to gas ratio on the capacity of gas hydrate. Experimental results indicated that the capacity of gas hydrate increased with increasing high gravity factors β. However，the effect was not obvious at a high gravity factors greater than 120. The capacity of gas hydrate increased firstly with increasing liquid to gas ratio，and then gently decreased. The optimum process conditions were as follows: liquid to gas ratio about 10 L/m3. The mechanism of hydrate formation by high gravity was studied with the theory of crystal chemistry. Compared with the traditional system，the high gravity system accelerated the process of dissolution，nucleation and crystal growth to a great extent，and gas capacity was also significantly increased.