The scalarization properties of(C,ε)-type and E-type unified solutions for multi-objective optimization problems are studied.First,the weighted Tchebycheff scalarization method proposed by Bowman et al.is employed to establish the scalarization results of(C,ε)-weakly efficient solutions and E-weakly efficient solutions for multi-objective optimization problems.Furthermore,based on the weighted Tchebycheff scalarization method,the scalarization results of(C,ε)-efficient solutions and E-efficient solutions for multi-objective optimization problems are established.Some weighted Tchebycheff scalarization results of(C,ε)-(weakly)efficient solutions and E-(weakly)efficient solutions for multi-objective optimization problems are obtained by adjusting parameters range of the scalarization model.The obtained scalarization results are an extension of some existing work and provide a theoretical basis for algorithm design for solving multi-objective optimization problems.