The invention relates to an extrusion grade aesthetical resin possessing metal color effect and its preparation method, which comprises the following ingredients by weight content: 100 parts of matrix resin, 0.1-3.0 parts of metal pigment, 0.1-3.0 parts of pearlescent pigment, 0.1-3.0 parts of molecular sieve adsorbent, 0.1-3.0 parts of lubricant and 0.1-1.0 parts of anti-oxidant. The method comprises the following steps: stirring and mixing the above raw materials in a high speed mixer, sending in a double screw extruder, under the conveying, shearing and mixing of a screw, fusing the raw materials, compositing, extruding, bracing, cooling, cutting into granule to obtain the extrusion grade aesthetical resin possessing the metal color effect. Compared with prior art, the extrusion surface effect of the extrusion grade aesthetical resin possessing metal color effect is close to metal spray paint effect, thereby the energy saving and environmental protection scheme without spraying can be realized, the aesthetical resin possessing metal color effect enables large market potential in the fields of automobile, household electrical appliance, consumer electronics and the like which possess high appearance requirement.