Twin pregnancy is simultaneous development of two foetus in one uterus. In some races it is more often (black race), and in the other is less often (yellow race). It inherits the same by the male and female line. Twin pregnancy can be monozygotic and dizygotic. The monozygotic twin pregnancy occurs when one sperm impregnate one egg and then it divides on two identic terminals with identic DNK material. Dizygotic twin pregnancy occurs when two sperms impregnate two eggs and then are formed two kids with different DNK material, genetically different and can be different sex, while at the monozygotic twins, kids are always the same sex. Complications with twin pregnancy are reflected in the occurrence of TTTS, various anastomosis and premature birth besause of too streched and too weighted uterus. The birth of twin pregnancy can be carried out vaginally, but because of frequent complications during the birth, it ,most often, goes to the cesarean section (hooked twins). Nutrition of pregnant women with twins should be various and rich in nutrients. Pregnant women shouldn't eat for two, but approximately 300 kcal more than without pregnancy. Women should take iron preparations and folic acid (prevention of neural tube defections). The nutrition should be rich with fresh fruits and vegetables. Pregnant women should move and exercise (not overmuch:light daily walk is enough). Twin pregnancy is necesaary to be intensively supervised and we must react on each change. Twin pregnancy is usually hospitalized in 35th or 36th week of pregnancy because of the high risk of preterm birth. The women who had birth to twins needs big support of her family and environment. With her should be, for beggining, a person of trust to help her with housework and children. To the mother, it should be explained everything about proper breastfeeding, and stagnans breast and how to , most effective, combine feeding of twins. She should be encouraged to breast-feeding and it should be explained to her well-being of breastfeeding, both for children and for her. It should be explained to her how will breastfeeding help her with faster involution of uterus and how it will be psyhically good for her. It is necessary to approach her the image of puerperal, stages that she will pass, and changes that will happen on her body (contractions during breastfeeding).