This essay elucidates Malabou's general theory of trauma that redefines the essence of trauma and explains trauma's constitutive function within the traumatized subject. This essay is composed of three parts. Firstly, the link between trauma and pathology is removed. Present trauma doesn't reactivate the early sexual trauma. Trauma is neither determined by the pathological discourse of etiology nor identified as an object of therapeutic treatment. Secondly, this essay clarifies the accidental character of trauma that is not mediated by subject's past but comes from the outside. Thirdly, Catherine Malabou explains the accident's impact on the subject. The event of accident causes the immediate destruction of subject's identity. It is because the subject is deprived of his status as the subject of experience who undergoes the traumatic accident that the subject can survive his or her own destruction. General theory of trauma reveals how traumatized subject is constituted by that which destroys him or her.