A study was canied out at households of Luc Yen disbict. Yen Bai provine from 2009 to 2011 to detennine characteristics of appearance and ability to the growth of Co goats, crossbred Fl (BT x Co) and crossbred Fl Boer x (BT x Co). Results showed that Co goat had colored hair heterogeneous, mostly yellow (57.33 percent), to belly, short legs, body dwarf, solid and fast, very good climbing. Fl (Bach Thao x Co) had balanced appearance, color or black hair was stained yellow, ear to moderate, small-bellied. Crossbred Boer x Fl (Bach Thao x Co) had a balanced appearance, head and neck bar sure, compact slim belly, pendulous ears and swept down. Mostly the same color hair color Boer goats (in the red and black), the rest is hair color such as black body, white Body. Body weight the period between the age of goats crossbred Fl Boer x (BT x Co) was the highest followed by the Fl (BT x Co) and Co goat, the male goats were always have a higher live weight than female goats at every stage of age.