Abstract: A series of microencapsulated organic pigment prepared by in-situ miniemulsion polymerization were applied into pigment printing of cotton fabric. The effects of distemper constituted form, encapsulating polymer property and printing technology on the printing qualities were investigated. It was found that, comparing with the traditional printed fabric, the K/S value, the handle, the dry and wet fastness of printed fabric treated by microencapsulated pigments were better than the former, implying the present of polymeric layer on the pigment particles can remarkably improve the dispersion of pigment particles on fabric surface and the binding force of pigment particles with fabric. It was also found that both the polymer property of microencapsulation and the baking technology play important roles in improving printing quality due to the segmental mobility and flexibility of encapsulating polymer. The appropriate encapsulating polymer layer is the copolymer of butyl acrylate and fractional rigid monomer, and the appropriate baking temperature and time is 140℃ and 5 min.