Abstract. The variations in exports of primary forest products in the United States and China were compared, and a constant market share model was applied to analyze the impact factors on the variations in exports of the two countries. The results showed that with decreasing import scale and structural changes in the target, the agile approach can help project teams quickly adapt to changing stakeholder requirements and volatile project conditions. Earned Value Management EVM provides project managers with an effective tool to track progress against the project schedule and budget. When integrated into a single approach, these two,