Abstract：In recent years，the frequent fluctuation of vegetable prices has aroused concerns
from all walks of life. This paper analyzes the price relations between each link of vegetable industry
chain as before production，among production and post production．Firstly，it analyzes the relation of
long-term equilibrium and short-term changes of prices between different links by the method of cointegration．
Then it further analyzes the price transmission regularity with finite distributed lag model.
The results indicate that the transmission of price indices of agricultural production machinery of the
upstream industry to price indices of vegetable production and consumer price indices in middle-stream
and downstream has a quarter of time delay．While there is no time delay between the price indices of
vegetable production and vegetable consumer price indices in middle-stream and downstream，and the
fluctuation trends of the 2 are in conformity．Overall，the vertical price in vegetable industry chain
transmits rapidly，and the integration degree of vertical market is relatively high．Based on the above
studies，this paper provides relative policy recommendations.
