TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractHydrate self-preservation property has been reported by some researchers in recent years. So as to test the dissociation rate of hydrates in different temperatures and pressure conditions. The authors conducted laboratory experiments of methane hydrate dissociation in order to examine its potential for application to product natural gas from hydrate. The gas methane's used in this work were artificially prepared using the methane hydrate. Methane hydrate dissociation was measured at atmosphere pressure within temperature range between -7ºC and 5ºC, and relatively slow dissociation was confirmed at around -5ºC. The dissociation rates of the gas hydrates observed can be used to evaluate the gas quantitatively of the hydrate fields, and to safely and eeconomically produce natural gas from hydrates deposits.