Abstract: Solidification and segregation of the major elements in DZ68 alloy with different Ti contents were studied by optical microscopy (OM) and electronic probe micro analysis (EPMA). The results showed that both the temperature of initial solidification and temperature of final solidification decrease gradually but the temperature range of solidification increases gradually with increasing Ti content in alloy under the test conditions. However, the increasing Ti content enhances both the positive segregation of Ta and negative segregation of W obviously. To reduce the (γ+γ′) eutectic in DZ68 alloy, the mass fraction of Ti in alloy should not be more than 1.7%.