  Referring to the supermultiplet of N=1 supergravity (SUGRA) the linearization
of N=1 SGM action describing the nonlinear supersymmetric (NL SUSY)
gravitational interaction of superon (Nambu-Goldstone fermion) is attempted.
The field contents of on-shell SUGRA supermultiplet are realized as the
composites, though they have new SUSY transformations which closes on
super-Poincar\'e algebra. Particular attentions are paid to the local Lorentz
invariance.
