By using the concept of quasi-coincidence of a fuzzy point with a fuzzy set,the notion of (∈,∈∨q)-fuzzy n-fold implicative filters in BL-algebras which is a generalization of ordinary fuzzy n-fold implicative filters,is defined,and several characterizations of (∈,∈∨q)-fuzzy n-fold implicative filters are given.The relation between (∈,∈∨q)-fuzzy filters and (∈,∈∨q)-fuzzy n-fold implicative filters and the relation between (∈,∈∨q)-fuzzy n-fold implicative filters and (∈,∈∨q)-fuzzy (n+1 )-fold implicative filters are investigated.The concept of a fuzzy n-fold implicative filters with thresholds in BL-algebras is proposed.The acceptable nontrivial concepts obtained in this manner were the ordinary fuzzy n-fold implicative filters and (∈,∈∨q)-fuzzy n-fold implicative filters.The extension properties for fuzzy n-fold implicative filters with thresholds and (∈,∈∨q)-fuzzy n-fold implicative filters are established.By using the concept of quasi-coincidence of a