QUANTIZATION OF INTERACTING FIELDS IN QED

We propose a new quantization scheme with which and by the equation of motion the quantization problem of both independent and dependent int eracting fields in QED can be solved simultaneously. When the external gauge field A(mu)(ex)(x) not equivalent to 0 (i.e., the Fermion field psi(x) and the electromagnetic field A(mu)(x) are independent of each other) our scheme gives the same result as the usual quantization app roach. When the external gauge field is absent the usual quantization conditions fail since it is not compatible with equation of motion, me anwhile our scheme is still valid. These results are demonstrated with solvable QED in 1+ 1 dimension.