Black worms in rice are generally referred to as rice worms, which can also be called rice weevils. If the number of rice worms is small, you can wash it a few times to clean up the worms and excrement. Even if you eat a small amount of rice worms, it will not be harmful to your body, but will reduce the nutritional value of rice, so you do not have to worry too much. Rice worms are not hardy, so you can put the rice in the refrigerator a day in advance and use a sieve with a smaller mesh to sift out the worms the next day. If you have the conditions, you can spread the rice with worms in a cool and ventilated place, and then pass the sieve after the worms have crawled out on their own to remove the residual worms. This will minimize waste. As rice worms are mainly found in rice, corn, millet, flour and other grains that have been stored for a long time or in a humid environment, if there are rice worms, it indicates that the food has been stored for too long, and if there is deterioration, discoloration and odor, it means that there are not only rice worms, but also mold contamination. At this point should be discarded in time to prevent food poisoning, or even cancer. It is recommended to buy food as you eat and avoid purchasing a large amount of food at one time. The place for storing food should be a cool and ventilated place to avoid putting it in a humid place, which will accelerate the reproduction of bacteria or pests and lead to food deterioration. It can also be kept in the refrigerator and eaten as you go, while it needs to be kept sealed.