There are two types of channel price promotion, push and pull, which manufacturers can use to promote its products. Basically, The purpose and object of these two type strategies are different. Push promotion is manufacturer reduces its wholesale price directly to retailer and pull promotion is providing rebates directly to consumer. These two type promotion strategies will impact both on manufacturer and retailer's profit. The purpose of this article is to explore the effect of these two type strategies to channel, manufacturer and retailer's profit. The results of this article are: To manufacturer, the push promotion will always reduce manufacturer's profit, and always increase retailer's profit in spite of while expanding total channel profit. However, the retailer will not reduce its retail price as large as wholesale price reduction. The effect of pull promotion depends on rebate price. As rebate price is low, both of manufacturer and retailer's profit will increase. While rebate price is high, only the profit of retailer will increase.