Abstract: On the basis of analyzing the characteristics of Beijing vegetable market generally, around the target of supply security, market running smoothly, and protecting production of the vegetable market, it sets up three types of early-warning indicators, indicators to measure the amount listed daily wholesale level of supply, the expected benefits and costs comparison of indicators to measure production efficiency, and the ratio of the wholesale price and place of origin with the farmers and the wholesale price index to measure the ratio of circulation revenue. Early warning should follow the principle of government lead and multi-party participation, and take various measures to ensure the implementation of early-warning vegetable market.