Oil crops are mainly annual crops, such as soybeans, peanuts, rapeseed, sunflower, sesame, etc., otherwise, cotton, linseed, hemp are also oil content. Perennial oil crops like olive, palm, coconut and tung trees are in second place. The distribution area of oil crops is similar to that of cereal crops. Oil crops are planted in densely populated areas throughout the world, but for different crop varieties. Individual oil crops are comparatively centralized, limited by natural conditions. The largest producers of oil crops in the world are the United States (soybean, cotton and peanuts), China, India (sesame, peanuts and rapeseed), etc. Developing countries have an important position in world production of oil crops: four peanuts and sesame seeds. Fifth, one-fifth of linseed, 70% hemp, one-third of rapeseed, one fourth of soybean and 100% of palm and coconut, at the same time which are important exporters of oil crops. Western Europe and Japan are the largest importers of low yields w...