The invention belongs to the field of pencils, and particularly relates to a carbon and graphite integration pencil lead and a preparation method thereof. According to the preparation method, after elutriation, clay powder, kaolin, charcoal dust, graphite and high-color black are taken as raw materials and mixed into uniform dry powder; the uniformly mixed dry powder is kneaded, stored in a sealing mode and ground; the ground lead material is stored in a sealing mode and pressed; the pressed lead material is subjected to baking, roasting and cutting to obtain the carbon and graphite integration pencil lead. According to the carbon and graphite integration pencil lead and the preparation method, the defects of single graphite pencil leads and single charcoal leads are overcome, so that thephenomenon that in the process of writing or drawing, the carbon dust falls cannot occur, and the color concentration is ensured.