The magnetic field strengths of most millisecond pulsars (MSPs) are about 10(8-9) gauss. The accretion-induced magnetic field evolution scenario here concludes that field decay is related to the accreted mass, that the minimum or bottom field stops at about 10(8) gauss for Eddington-limited accretion, and scales with the accretion rate as M-1/2. The possibility of low field (similar to 10(7) gauss) MSPs has been proposed for future radio observations.