Based on the pots and simulated field experiments, this paper provided information about the changes of some physiological indicators in leaves of tobacco Nicotiana tabacum under the tretment of single Cd, single Fe, Cd+ Fe and Fe+Cd. The results showed the contents of chlorophyll a, chlorophyll b and chlorophyll a + b in leaves of tobacco decreased with the increase of the concentration of Cd, and increased with the increase of the concentration of Fe. The contents of nicotine decreased with the increase o...