From September 2009 to September 2011, in Dinh Hoa district, Thai Nguyen province, the Project "Research for developing high productivityof Mong cai sows herd" was carried out. Applying complexly suitable technical solutions in mountainous conditions contributed to increase the Mong Cai sows herd reproduction from 8.53 to 13.11 percent in comparison with Mong Cai sows in Dinh Hoa, Thai Nguyen province.