Abstract: The renormalization of nucleon scattering is studied in nonperturbative regime. The failure of the conventional subtractive program in nonperturbative context is analyzed. The nontrivial relevance of renormalization prescriptions in calculating phase shift and the importance of physical boundary conditions in determining the choice of the prescriptions are discussed in the nonperturbative parametrization and illustrated with an example in the partial wave channel .

Key words: nonperturbation, renormalization, nuclear effective field theory, nonperturbation, renormalization