Background of restudying on Poisson’s bispinor equation in electromagnetic field

This paper deals with the background of restudying upon Poissonpsilas bispinor equation. The main properties of the vector potential and Poissonpsilas bispinor equation in the electromagnetic filed are analyzed. Besides the process introducing Poissonpsilas bispinor equation in electromagnetic field, a series of inquiries, which maybe either well known or unfamiliar by people, are proposed.