The present invention provides a plastic composition and a plastic substrate, application thereof, and a plastic surface selective metallization method. The plastic composition comprises a plastic component and a metal compound; the metal compound has a general formula of ACuPO4 and / or A2CuP2O7, wherein A is at least one selected from IA family in the elements periodic table. Surface metallization on the plastic composition and / or plastic substrate containing a specific compound can obtain a high plating rate, and the obtained plastic product has high whiteness.