1. Seasonal factors: vegetable prices start to rise in September and June every year, 10, mainly because the weather turns cold and the growth of vegetables declines, but some autumn vegetables, such as Chinese cabbage and green vegetables, are not affected; The price of vegetables continued to rise in winter, and began to fall in March and April of the following year, mainly because the southern vegetables and some northern greenhouse vegetables were gradually listed, and the prices gradually fell. By June and July, vegetable prices will fall to a lower position. However, the price of some leafy vegetables is greatly affected by the high temperature and heavy rain in summer, and the price sometimes increases greatly.

At the same time, if high temperature and rainstorm weather occur frequently in summer, the production, storage and transportation of vegetables will be greatly affected, and the price of vegetables in some areas will rise rapidly in a short time.

2. The increase of vegetable planting cost: seeds, fertilizers, infrastructure, labor, etc.

3. Increased storage and transportation costs of vegetables: freezing, storage, oil price, etc.

4. The distance between the producing area and the selling area increases: the urbanization process leads to the increase of the distance between the main producing area and the selling area and the increase of storage and transportation costs.

5. Climatic factors: Frequent extreme weather will have a great impact on vegetable production, storage and transportation.

6. Retail: The traditional stall sales have been changed to centralized management in the vegetable retail market, resulting in a decrease in the number of retail stalls, a relatively high entry threshold, an increase in the cost of vendors and the transfer of prices to consumers.

7. Demand change: With the increase of income level, the demand for high-quality vegetables increases, and the cost and price of vegetable packaging increase.