| In this paper we derive the following results:Let{fn}be a sequence of meromorphic functions on a domain D, all of whose zeros have multiplicity at least3and each of which has only one multiple pole.Let{hn} be a sequence of meromorphic functions on D, such that{hn} converges spherically locally uniformly to a function h which is meromorphic and zero-free on D. Suppose that fn'≠h, then{fn} is normal on D.Furthermore,we studied Montel normal criterion and another normal family concerning omit-ted function. |