To follow the government policy and provide environmental-economic measures for protecting the environment at water source regions, the Dynamic Calculation Model was developed for proposing a water source eco-compensation standard by studying and summarizing existing eco-compensation standard accounting methods. The model was applied to establish the standard of water source eco-compensation policy for the Crane Reservoir. The Dynamic Calculation Model divided the ecological compensation process into three stages:trial stage, restoration stage, and stable stage. Depending on the phase characteristics and targets in each stage, respective calculation methods were adopted:the trial stage uses the Contingent Valuation Method, the restoration stage used the Game Model based on the Correction Total Cost Model and the Water Resources Value Method, and the stable stage adopts the Water Pollution Compensation Method. The results show that the trial period of crane reservoir eco-compensation was from 2015 to 2017, and the eco-compensation standard was 1.44billion yuan. The restoration period was 2018~2020, with an eco-compensation standard of 8.94 billion yuan. The eco-compensation standard of stable stage could be calculated annually after 2021. Since the Dynamic Calculation Model proposes water source eco-compensation standards by the dynamic accounting that were with highly recognition, widely application, and simply calculation, this model could be easily promoted.