The utility model discloses a multiplex optical isolator, include: support and light isolation components are kept apart to light, support array distribution is kept apart to light has a plurality ofembedded grooves, light isolation components set up in the embedded groove of support is kept apart to light, be provided with the recess in solely keeping apart the support, isolation components is bare in the holding bonding, light isolation components sets gradually the second polarization beam splitting device who goes out the plain noodles as first polarization beam splitting device, polarization rotary device and the conduct of going into the plain noodles along the light path orientation, first polarization beam splitting device and second polarization beam splitting device paste the two sides at polarization rotary device through the binder, first polarization beam splitting device's the polarization direction is on a parallel with the reference surface, and second polarization beam splitting device's the polarization direction and reference surface become 45 degrees contained angles. In this way, the utility model discloses the support is kept apart to well light can provide stable magnetic field, and every light isolation components can realize independent smooth isolating function, needing on the integrated device to be particularly useful for the coupling to assemble aplurality of optical isolator, has improved efficiency greatly.