Laboratory unidirectional freezing experiments were performed to investigate the migration of nutrients(TN, TP) and salinity(Na⁺, Cl^-) in Lake Ulansuhai water during ice season, and difference among single factors, including initial concentration, freezing temperature and pH were tested. The distributions of TN, TP, Na⁺, Cl^- in simulation ice cores were studied and partition coefficients between the ice and the unfrozen liquid were determined. The results showed that concentrations in ice increased with enhancing initial concentration and decreased with enhancing freezing temperature. The concentration in various segments of the ice phase was in the order of: top K of TN and TP, but higher K of Na⁺ and Cl^-. At the significant level of 0.05, we found: different initial concentration and freezing temperature can significant affect the distribution of TN, TP, Na⁺ and Cl^-. At different pH conditions, their distribution varies in lower initial concentration, but no significant change is found in higher initial concentration of TN and TP. Results indicated that transport processes of contaminants were greatly affected by its physical properties and the freezing environment factors.