During pregnancy, you should mainly eat a normal healthy diet and don't eat special food. Especially the first trimester is the key period of embryo development, which can not be polluted by the environment such as diet. During pregnancy, you should eat more foods rich in protein, iron and calcium to promote the growth and development of the fetus. This kind of food is mainly meat, including lean pork, beef, mutton and so on. During pregnancy, you should also eat more green vegetables and green leafy vegetables.