According to characteristics of tower foundation on sloping groud, four kind of solutions are proposed to match up between the base and the tower structure of transmission line. The four proposals are introduced respectively as, equal tower leg length with equal foundation, equal tower leg length with unequal embedded foundation, unequal tower leg length with equal foundation, and unequal tower leg length with unequal foundation. The match up principles are also given. The effective uplift resistance depth was supposed to reflect the bearing capacity of foundations on sloping ground.