Colloidal spheres composed of two amphiphilic azo polymers were fabricated and characterized.The colloidal spheres were prepared from BP-AZ-CA and BP-AZ-NT through gradual hydrophobic aggregation in THF H2O solutions induced by increase in the water content.The relationship between the scattering light intensity and water content of the system was studied.The results show that during the aggregating progress

the more hydrophobic BP-AZ-NT tends to aggregate first

so the critical water content(CWC) of the system is determined by the more hydrophobic component.Because of the less hydrophobic molecules apt to aggregate later

so the outside layer of the colloidal spheres contains less hydrophobic BP-AZ-CA molecules.Upon irradiation of a linearly polarized Ar+ laser beam （488 nm，100 mW/cm2）

the hybrid colloidal spheres were elongated along the polarization of the laser beam.The results show that for the twocomponent colloidal spheres containing both BP-AZ-CA and BP-AZ-NT

the elongation rate of the colloidal spheres at first stage is similar to the colloidal spheres composed of BP-AZ-CA

but the final deformation degree is slightly smaller than that of BP-AZ-CA colloids.