Based on the characteristic that the conductivity of photosensitive semiconductor material can be controlled by external pump light, a dynamic optical-controlled single-/dual-band switchable metamaterial absorber is designed by embedding the semiconductor material of gallium arsenide into the nested square ring-like cell structure. On this basis, according to the different excitation characteristics of different semiconductor materials pumped by light with different wavelengths, the first structure is expanded by introducing the second semiconductor material of germanium, and an optical-controlled multi-band metamaterial absorber is proposed. The proposed absorber possesses the absorption characteristic of arbitrary switch among the single-/dual-/triple-band absorption states by using pump light with different wavelengths to tune the conductivities of the semiconductors. The simulation results show that the proposed absorber has the characteristics of insensitive polarization and wide-angle incidence, which is expected to be applied in modulators, frequency selectors, detectors, and so on.