Bullwhip effect is the situation that the order information distortion resulted from time delay and expectation of the demand. Through the order information distortion, the inventory of upstream suppliers raised and fluctuated, thus the operation cost of suppliers increased. Although the down stream customer seems to exempts from such disaster, but the cost increase in the upstream supplier will cause the raising of the purchasing cost of those downstream customers. The raising cost and inefficiency will be the burden of whole supply chain and not single party can exempts such result. Supply chain collaboration is aimed to solve such problems. This study explode the operations of supply chain collaboration from a integration perspective to understand the value of collaborative forecasting for the supply chain operations. Taiwan TFT-LCD industry will be the platform of this study, base on the platform, system dynamics models will be build up and simulated to analyze the effectiveness of collaborative forecasting model under different demand patterns. The result of this study can be the reference when adopting collaboration in Taiwan TFT-LCD industry.