The invention discloses a food sampling method, which comprises the following steps of: after a sampling task is received, firstly obtaining sampled regional information, sampled unit information and sampling personnel information, and inputting the regional information, the sampled unit information and the sampling personnel information into a double random system so as to randomly distribute sampled units and sampling personnel according to the regional information; after the distributed sampling personnel arrive at the destination, sampling samples of corresponding links, and collecting video information in the sampling process through a visual monitoring system; after sampling is finished, photos, images, sampling lists, notices, work discipline feedback lists and sample purchase cost certificates in the sampling process are uploaded to an electronic evidence management system. According to the method, sampling personnel and sampled units can be randomly distributed, sampling video information can be collected through a visual monitoring system during sampling, evidence information can be stored through an electronic evidence management system after sampling is finished, and sampling information storage difficulty is low and accuracy is high.