Research conclusions: (1)The influence of tilted foundation rock on the subsidence of flexible strip foundation changes with the change of ground surface, the influence on central area of the foundation is the smallest. When the gradient of foundation rock is leas than 450，the influence on uneven subsidence by tilted foundation rock is notable.(2)The proposed values of subsidence influencing coefficient and uneven subsidence influencing coefficient under effects of tilted foundation rock can be used for calculation of the subsidence of flexible strip foundation for embankment and it also can be used for calculation of subsidence of the compacted soil on the bottom under vertical strip load of foundation rock. ( 3 ) The research on this field should be strengthened for keeping mistaken design of flexible foundation away because of neglecting the uneven subsidence of foundation caused by tilted foundation rock.