The invention relates to colored joint filler with rheological property for narrow joints. The colored joint filler is prepared from the ingredients in parts by mass: 400-750 parts of silicate cement, 250-600 parts of flowing filler, 1-5 parts of cellulose ether, 5-30 parts of redispersible latex powder and 1-4 parts of water reducing agent. The traditional joint filler is of sticky paste after the traditional joint filler is added with water and is stirred while under construction, the viscosity is high, and the narrow joints with width smaller than 1mm is difficult to fill up; the joint filler disclosed by the invention is especially added with spherical semitransparent colored glass micro-beads, which are treated by a special process, and is fluid filler; and slurry has high fluidity during construction, the construction is easy, the narrow joints with width smaller than 1mm is easy to fill up, and a semitransparent colored imaginary point effect is achieved after drying.