Whether a bid-winning notification issued has the legal effect of concluding a contract has long been debated, and there is no final conclusion at present. To judge whether a contract is concluded after the bid-winning notification is issued, specific analysis shall be made according to the contents of the contract and the actions taken by both parties. Only when the contents of the bid-winning notification meet the acceptance conditions stipulated in the Civil Code of the People’s Republic of China and the successful bidder has started work in accordance with the requirements of the bid-winning notification, an acceptance is constituted and the contract is concluded.