The application provides a cold-air drying technology used for processing bamboo shoots. The technology comprises the following steps: materials are heated to a preset first temperature range; the materials are maintained in the preset first temperature range; when humidity information falls to a preset first humidity range, a heating device gradually lowers the temperature of the materials according to a preset power rule; and when the humidity information falls to a preset second humidity range, the heating of the materials by the heating device is stopped and a cold air device is turned off. The cold-air drying technology used for processing the bamboo shoots utilizes microwaves in the heating device to uniformly heat the bamboo shoots, so that internal moisture rapidly transforms intowater vapor to be separated out form the bamboo shoots; the cold air device is utilized to discharge the water vapor outside a drying device; intelligent control of a control device enables the bambooshoots to be dried quickly; and at the same time, high temperature causes decomposition of oxalic acid in the bamboo shoots, thereby reducing the toxicity of the bamboo shoots and improving food safety.