A month: Of life of each month new student grow faster than any period, should be brought up than oosperm 10 thousand times. Arterial, vein already was formed, and fluid having blood flows; Head, kidney, digest tube already saw embryonic form; Umbilical cord already began the work; The heart is formed and begin to beat. 2 months: Fetal embryo looks already very like darling, when two months should end, facial features and limb also had shaped. 3 months: Fetal organic system begins the work, can breathe to also can be excreted, fetal height makes an appointment with 6~10 centimeter, 50 grams control weight, external genital organs already germinate, the mouth can piece, close, deglutition, limb is OK activity; To the outside stimulation can produce reaction, if touch the eyelid that touchs him, his meeting narrow one's eyes eye; Touch the palm that touchs him, finger can bend; Touch the lip that touchs him, his meeting sip mouth; Touch sufficient with, toe is met piece of scallop4 months: Fetal height makes an appointment with 13~17 centimeter, 125 grams control weight; Cadre system is farther development, placenta is formed completely already; Force of fetal limb activity increases, the mother can feel quickening, muscle somewhat development. 5 months: The hair of fine fine and soft grew on the head, brow and eyelash also grow, long like fluey embryo cover the whole body; Height 20~30 centimeter, weight 250~300 is overcome; An appropriate position is acquired in the uterus; If abdomen of auditive and clingy mother, can hear fetal heartbeat. 6 months: Fetal height is controlled 33 centimeters, weight 600~700 is overcome; Begin to have hypodermically adipose; The eye has grown completely already, can open and close approach, still but all round sweep, can breathe normally, still have crying expression, the hand can grasp fist. 7 months: Fetal height makes an appointment with 40 centimeters, weight can amount to 1000 grams, each organ development is all ready, preliminary already had viability. 8 months: Fetal height already grew 43 centimeters, 1750 grams control weight, grow at this moment very rapid, almost plentiful makes stature a note of the ancient Chinese five-tone scale; As a result of mobile space decrescent, fetal activity decreases; Fetal and hypodermic grow gradually adipose, the air temperature outside preparing to get used to an uterus changes. Nine month: Fetal height already grew 50 centimeters, weight amounts to 2500 grams to control, if be in,be born at this moment, surviving opportunity is greater. 10 months: Fetal development is mature, fetal or it is mature to call mature. Stylish of about to give birth is unripe weight is in on average 3000 grams left and right sides, height amounts to 50 centimeters or so, if arrive the world, smooth and that ringing cry, lively limb motion, strong lactation desire, exquisite skin, showed extremely powerful and prosperous vitality.