Abstract: Kelameili gas field of Xinjiang Oilfield Company is a large and integrate volcanic gas field with proven one hundred billion cubic meters reserves in Junggar basin. Since putting into development, it was faced with such problems as water cut rising fast in gas wells,productivity declining and low degree of reserves producing, etc. In particular, the gradual increase of water?yielding wells has seriously restricted the gas field production. Hence, water control has become the most urgent problem to be solved to keep the stable gas production.Aiming at such phenomena, this paper studied the gas and water distribution regularities, water?yielding patterns and features as well as water invasion mechanism. It is preliminarily believed that Kelameili volcanic gas field mainly has three water invasion types: water coning,vertical water channeling and vertical channeling?lateral invading ones. According to these different water?invading patterns, this paper proposes the water control measures, performs the water control tests of the gas reservoir in Dixi?18 well block where the water?yielding is the most serious, and the results are satisfactory