Abstract: In order to make use of the water resources as much as possible, four experimental treatments of irrigation water, including fresh water, salt water, magnetized salt water, and shifting irrigation of salt and fresh water, were conducted for three years at the experimental station of Mingqing salinity control. Each treatment was replicated three times in a strip-plot design. Seven parameters, including the yields, salt contents at the root zone, proline content in the leaves of beet, etc. were measured. The results showed that the beet can be irrigated well by shifting irrigation with fresh and salt water.