One of the methods in producing colored fibers is masterbatch technique. Colored masterbatches are special products in that a pigment is distributed in a polymer carrier. Masterbatches mostly are used in the production of polypropylene fibers. The aim of the present study is production of nano masterbatch with the different formulation and also production of fibers using these masterbatches and micro masterbatches. At first in this paper Colored masterbatches for polypropylene fibers were produced with different formulations and then colored polypropylene fibers were produced using above masterbatch. PP granules, two types of nano-pigment produced using nano-clay and methylene blue and Malakhyt green dyes, also phthalocyanine pigment and adaptive PPgMA were used For preparation of masterbatch. Three samples with different percent of pigment in micro and nano masterbatches were produced in order to compare the different masterbatch formulations. Their rheological properties were measured and then were analyzed using the available relationships. Also Colored polypropylene fibers were obtained using masterbatches and color properties of the fiber samples was measured using spectrophotometry and image analysis was performed on the microscope images of fiber samples. Moreover, the comparison between the two types of generated Nanopigment using rheology, colored and microscopy tests were did. The results show that increasing the percentage of pigment in micro and nano masterbatches samples, makes the concentration of particles and also dispersions become more unfavorable. With changing from micro-to nano-particle in masterbatches, concentrated particles and agglomerates increase, the quality drops and dispersion shows Sudoplastic behavioral. By comparing the properties of prepared masterbatches from two types of Nanopigment was found the nanopigment prepared using methylene blue has perform better than the nano pigment produced using Malakhyt green . Key words: Masterbatch , Nanopigment, Dispersion, Colored fiber