For construction organization plan, the optimized allocation and overall balance of earth is of great significance to reduce the project cost and ensure the construction period in the construction of rock-fill dam. Because of the characteristic of being influenced or constrained by time-space, a new method of changing its dynamic into static is presented with the system analysis based on the exising research. Meanwhile, Linear Programming is introduced to solve the problem. In order to strengthen the commonness and agility of model, some human interventions are in an in-depth and particular consideration in building the mathematics model. And then for the expression of results, Geographic Information System (GIS) is referred to demonstrate the allocation process with graph or animation to avoid its powerless expression. With the help of powerful VC+ + , corresponding software is drawn up, whose interface is friendly operation is easy and applicability is preferable. At last a large-scale rock-fill dam is illustrated. The successful application of the software to it shows the reasonability and effectiveness of the method.