A　preliminary　simulation　of　gas-liquid　two-phase　flow　in　parallel　flow　field　was　studied　in　this　paper.　The　VOF　two-phase　flow　model　was　used　to　model　the　transient　process　of　gas　drains　the　liquid　water　from　the　channel　with　the　initial　liquid　distribution　at　the　bottom　of　the　flow　field.　At　the　vertical　orientation,　the　effect　of　gravity　on　the　liquid　transfer　was　analyzed.　The　result　showed　that　the　parallel　flow　field　did　not　suit　for　liquid　drainage　and　the　liquid　distribution　was　inhomogeneous.　To　improve　the　liquid　drainage,　the　inlet　manifold　was　changed　with　gradual　decreases　of　vertical　section.　It＇s　found　that　the　new　style　manifold　can　change　the　water　distribution　in　the　channel　and　improve　liquid　drainage　performance　of　embranchment　channels.　©　All　Rights　Reserved.