In the uncertainty condition, we study a supply chain with a rational supplier and a overconfident retailer. Firstly, we introduce a contract that is Gain/Loss-sharing-and-buyback (GLB) contract. We show that the equation about the optimal order quantity and the sufficient condition leads the coordination with the GLB contract. Secondly, we introduce two particular cases for GLB contract: Buyback contract and Gain/Loss-sharing (GL) wholesale contract. Regarding these two contracts, we obtained the optimal order and the monotonicity of the optimal order quantity on the overconfident level. Meanwhile, we also show that the buyback contract could coordinate the supply chain in the high profits conditions. The Gain/Loss-sharing (GL) wholesale contract and the wholesale contract could coordinate the supply chain in the low profits conditions.