The self-designation of “The Son of Man” used by Jesus Christ in the gospels has been one of the most debated and unsettled problems of the New Testament scholarship. The author plans to look into a few challenging questions of whether the term was used by Jesus Christ or being designated by his disciples, in what sense the term was used or meant in the gospels, whether there was some evidences of the term in the Old Testament or the Jewish tradition as being evidenced in the gospels, and whether there was any identity or difference between the terms of the Son of Man and the Son of God, used by Jesus in the gospels. Cullmann noted several critical problems about the Son of Man in his work of Christology of New Testament. Further we note a few recent and noteworthy scholarly works (for example, the Son of Man in Psalm 80). These works serve as the ground of this study and investigation. Our study examines a few critical passages in the gospels. Our investigation begins with Mark 2:27-28 and the similar incidents in the gospels about the law and the lordship and work of Jesus on Sabbath day. The next passage is Mark 3:28 about the work and authority of the Son of Man to forgive man’s sin. The third passage is the eschatological lordship of the Son of Man in Mark 14:62. Our study then examines the related passages including John 5:25-29 and John 9:35-37. The basis and direction of this study is distinctively based on the framework of Salvation History and the hypostatic and paradoxical natures of the person and ministry of Jesus Christ presented in the gospels.