Six species of Quadrastichus Girault (Eulophidae: Tetrastichinae) from China are reviewed, including three new species: Q. longiseta sp. nov., Q. flavomaculatus sp. nov., Q. longiscapus sp. nov. and one new country record, Q. vacuna (Walker, 1839). New distributional data for Q. anysis (Walker, 1839) and Q. sajoi (Szelényi, 1941), and a key to the Chinese species of Quadrastichus based on females, are included.