  Quaternion Dirac equation has been analyzed and its supersymetrization has
been discussed consistently. It has been shown that the quaternion Dirac
equation automatically describes the spin structure with its spin up and spin
down components of two component quaternion Dirac spinors associated with
positive and negative energies. It has also been shown that the
supersymmetrization of quaternion Dirac equation works well for different cases
associated with zero mass, non zero mass, scalar potential and generalized
electromagnetic potentials. Accordingly we have discussed the splitting of
supersymmetrized Dirac equation in terms of electric and magnetic fields.
