Soybeans in the shelf life of 2-3 years can continue to eat, time is too long it is not recommended to eat. Soybeans must be dried before preservation of moisture, or a short period of time will be moldy and worms, the details are as follows: 1. soybeans after cleaning must be spread out, sun exposure, sun-dried moisture, so that a long time to store, and then with no water, clean plastic cans, and then put into a dry, cool, ventilated place, the period of one or two months apart, and then open the soybeans, continue to sun exposure, so that you can also continue to prevent soybean bugs. General situation storage 2-3 years. 2. soybean contains high protein, 500 grams of soybean protein content equal to 1500 grams of eggs or 6 kg of milk or 1 kg of lean pork, it can be imagined that the nutritional value of soybeans is very high, there are green dairy cattle called.