Digital camouflage has been widely used because of its good camouflage effect. However, the pre-evaluation of digital camouflage design is still lags behind its widespread application. So a new model based on visual transmission characteristics is proposed in this thesis, in order to simulate the spatial color mixture effect of digital camouflage pattern. According to experimental results, the new model is proved to have a good performance. The new model can provide guidance for later modification, reduce the risk of construction, and improve the effect of digital camouflage.