Because of the discrepancy of project types, the project progress curves present different characteristics. Stud-ying project progress curves can reduce management risk of project and overall grasp the enforcement condition of the project. Combining project characteristic, this paper reaches 4 kinds of project progress curve patterns. If the front of the progress curve is concave, and its rear is protruding in the break point, it is named as S model. If its front is protru-ding and its rear is concave in the break point, it is named as the reverse side of S model. If the front and rear are con-cave in the break point, it is named as J model, and two half sections are both upward protruding, it is named as the re-verse side of J model. Through a case study, it shows that application project progress curve model can better raise pro-ject management.