Sow to maintain a quiet environment early pregnancy, to avoid too noisy environment. This stage is the peak of embryonic death, if the sow was frightened, easily disturbed, leading to metabolic disorders, the uterine environment will be varying degrees of impact, thereby increasing the number of embryonic deaths. Therefore, during pregnancy, it is necessary to keep the pens quiet and avoid approaching strangers so as to prevent harassment of pets or animals, prohibit excessive noise, and even less to sow and sow sows. In short, to ensure that the sow without any interference. When feeding pregnant sows, avoid using moldy, contaminated and frozen feed, which is easy for the sow to become ill and ensure that the sow can eat good quality feed. Winter and summer is the highest period of breeding Steyr brigade, using a variety of measures to ensure the stable environment of pigs, it should be temperature control at about 15 ~ 25 ℃, humidity control at 70% to 80%.