Abstract: The probability statistical theory and stochastic sampling modeling technology are used to establish an exploration process modeling method and dynamically study the relationship between the discovery of resource amount and the work load of exploration during the exploration of oil and gas. This method can forecast the resource amount of a prospect area, the scale and possible number of oil and gas pools, and the expioration work load, cost and effect for some resource. These information will be helpful for the further exporation and development of oil and gas in the prospect area.