Chiral quantum optics has received extensive attention in the field of quantum information technology, which mainly studies the spin-dependent chiral coupling and transmission behavior of light in micro and nano structures. The interaction between chiral light and matter can enhance the coupling between photons and quantum emitters and endow nano-photonic devices with new functions and applications, thus promoting the large-scale application of chiral quantum optics in the field of quantum information. In this paper, the on-chip chiral nano-photon devices based on semiconductor quantum dots are reviewed, with emphasis on the optical properties of semiconductor quantum dots and the physical mechanism of the interaction between chiral light and matter. On this basis, the multi-functional chiral photon devices realized by chiral coupling principle in recent years are summarized, and the future application scenes of chiral quantum optics are prospected.