The most fundamental reason why cheap food hurts farmers is the relationship between supply and demand. According to the supply and demand theory of economics, when the demand is constant, the more output, the lower the price; On the contrary, if the output decreases, the price will rise.

So the government should do a good job in guiding vegetable farmers. When the planting amount of a certain vegetable reaches the market saturation level, vegetable farmers should be guided to reduce the planting scale of a certain vegetable and not follow the trend. That is to eliminate information asymmetry in economics.

As long as the output and demand maintain a certain balance, the price of vegetables will not skyrocket and plummet.