Banana dwarf disease is a disease of banana caused by Banana bunchy top virus or BBTV. The virus and the disease are spread by banana aphid called (Pentalonia nigronervosa. Instead of living on banana, P. nigronervosa also live on plant species belong to Family Zingiberaceae. In this research, we used galangal a member of Family Zingiberaceae as an alternative host banana aphid. The objective o…