Environment-friendly composite plastic with pearlescent effect and multicolor pattern effect and preparation method of environment-friendly composite plastic

The invention belongs to the technical field of plastic preparation, and relates to an environment-friendly composite plastic with a pearlescent effect and a multicolor pattern effect and a preparation method of the environment-friendly composite plastic. The plastic is composed of the following components in parts by weight: 70-200 parts of styrene thermoplastic resin, 40-100 parts of auxiliary materials, 1-20 parts of a macromolecular compatilizer, 0.1-10 part of an auxiliary agent, 0.1-5 part of a lubricating agent and 0.1-4 part of a color master batch, wherein the auxiliary materials areMS, HIPS and PP; and the auxiliary agent is composed of an anti-aging agent, an anti-ultraviolet agent and an inorganic or organic filler. According to the invention, the appearance of the plastic canbe improved without adding pearl powder, pearl color masterbatch or special color masterbatch, and the plastic has the pearl effect and the multicolor pattern effect; the preparation method is simple, safe and environmentally