A chip packaging method includes forming a first redistribution layer and a first dielectric layer on a first temporary carrier to generate a plurality of first conductive interfaces close to the first temporary carrier, each pair of neighboring first conductive interfaces having a first pitch; forming a second dielectric layer on a first portion of the first redistribution layer and the first dielectric layer so as to cover the first portion of the first redistribution layer and expose a second portion; and forming a second redistribution layer and a third dielectric layer over the second dielectric layer to generate a plurality of second conductive interfaces. A circuitry being formed by at least the first redistribution layer and the second redistribution layer and each pair of neighboring second conductive interfaces has a second pitch larger than the first pitch.