Preparation method of selenium-rich edible salt

The invention discloses a preparation method of selenium-rich edible salt, and belongs to the field of food processing.The method comprises the following steps that 1, selenium-rich cardamine hirsute powder is humidified and aged through a saturated salt solution, the water content of the selenium-rich cardamine hirsute powder is 8-16%, the selenium-rich cardamine hirsute powder is aged for 12-36 h, then the selenium-rich cardamine hirsute powder is put into a mixing machine to be mixed, and the selenium-rich cardamine hirsute powder obtained after humidification and aging is obtained; (2) uniformly mixing edible salt with the humidified and aged selenium-enriched cardamine hirsute powder to obtain salinized selenium-enriched cardamine hirsute; and (3) uniformly mixing the salinized selenium-rich cardamine hirsute with edible salt to obtain the selenium-rich edible salt. The selenium-rich cardamine hirsute and the edible salt are adopted as raw materials, the selenium content of the prepared product is higher