The movement, development of Vietnamese philosophical thought in the first half of 19^th century was necessary to build an orthodox ideology leading social spiritual life towards protecting and consolidating feudal state centralization dynasty highly. Confucianism was chosen and developed to meet this requirement. The paper analyzes major characteristics of Vietnam philosophical thought in the first half of 19^th century elucidating its differences in this stage in comparison to other stages and recommends some issues for further study.