Abstract: In view of the problems that exist in gas reservoir/well production allocation and design, we introduce the conception of production time, then the dynamic optimization allocation model of water drive gas well is established. The calculating process of traditional static allocation production is improved by use of the model. The method is slightly dependent on production data, which may decrease the man-made errors both in allocation production and design. Especially for natural water influx gas reservoir, if the production allocation is not rational, it will lead to the water accumulation on the bottom of the hole. Therefore the dynamic optimization allocation possess is important in gas reservoir development.