A chip package structure is provided. The chip package structure includes a redistribution structure including a dielectric structure and a plurality of wiring layers in or over the dielectric structure. The chip package structure includes a shield bump structure over the redistribution structure and electrically insulated from the wiring layers. The chip package structure includes a first chip structure bonded to the redistribution structure. The first chip structure is electrically insulated from the shield bump structure, and the first chip structure partially overlaps the shield bump structure. The chip package structure includes a second chip structure bonded to the redistribution structure.