Triangular norms in the study of probabilistic metric spaces as a special kind of associative functions defi ned on the unit interval. These functions have found applications in many areas since then. In this study, we present new methods forconstructing triangular norms and triangular conorms on an arbitrary bounded lattice under some constraints. Also, we give some illustrative examples for the clarity. Finally, we show that our construction methods can be generalizedby induction to a modi ed ordinal sum for triangular norms and triangular conorms on an arbitrary bounded lattice, respectively.