The main factor influencing gas well productivity includes: the prorating of gas well is unfair, gas transfusion is high; bottom hole overstock liquid terrible, combined oil pipe and corruption influence gas well productivity; 影响气井产能的主要因素有:气井配产不合理、气田输压偏高、井底积液严重以及组合油管和油管腐蚀影响气井产能;