A study on~(12) CO,~(13)CO, and C~(18) O of the high galactic latitude cloud HSVMT 27, located in Ursa Major, was conducted. A relatively low~(12) CO excitation temperature was found. While some C~(18) O emissions were detected, they were too weak to be mapped. With the linear resolution of 0.08 pc and the velocity resolution of 0.17km·s~(-1), 26~(13) CO cores were identified in the dense regions. All the local thermodynamic equilibrium masses of these cores are less than their Virial masses, ranging in 0.5...