An experiment was conducted to study effects of salinity, varying in level, 50, 100 or 200 mmol L^-1 NaCl, on plant growth, ion absorption and distribution of wild tomato Solanum pimpinellifolium (WT), cultivated tomato( S. esculentum) (CT) and their hybrid F1 generation. Results showed that dry weight (DW) of the three tomato varieties decreased significantly under salt stress, either 50, 100 or 200 mmol L^-1NaCl, displaying a descending order of CT>WT> F1. With rising salt stress, Na content increased, while K content decreased significantly in all the tomato plants. Besides, under salt stress, K /Na decreased significantly in all the tomato plants and the decreases in the plants, regardless of variety, were similar in extent. With rising salt stress, the roots of the plants of either variety enhanced their K or Na selectivity ratio (S_K,Na), but the enhancement varied slightly in extent with variety, showing an order of WT> F1>CT. However, salt stress decreased stem S_K,Na in all the tomato plants by a similar degree. But with rising salt stress, the drop in CT was much bigger than that in F1. Salt stress increased leaf S_K,Na of all the tomato plants, but with rising salt stress, leaf S_K,Na declined in WT, while it kept increasing gradually in CT and F1 and the rise in F1 was more significant than that in CT. To sum up, the F1 generation is similar to its wild parents in maintaining ion balance, especially in their leaves, which makes F1 generation better in growth and higher in salt tolerance than its parents.