Abstract: In order to make a better understating of the influencing factors of oil reserve-production ratio and its change regularity,the relation analysis between the reserve-production ratio and development time,recovery degree,stable oilfield production and reserve replacement rate has been carried out.Under the double logarithmic coordinates,the reserve-production ratio has good linear relationship with development time and recovery degree,while the correlation is poor in the oilfields with great change of reserves and production.According to the statistics of reserve-production ratio at the end of stable production period of 50 oil(district)field at home and abroad,the average reserve-production ratio is8.5.The reserve-production ratio in our country in recent years is over 16,and the reserve replacement rate is over 1.0.Compared with the world,China has good stable production basis,but the reserve-production ratio in our country is less than a third of the global reserve-production ratio.