Full Stokes polarization detection plays a significant role in various fields, such as environmental monitoring, remote sensing, biomedical detection, and optical communication. Conventional full Stokes detection systems rely on assemblies of discrete optical components, which are inherently bulky, complex, and difficult to integrate. As photonic technologies advance, there is an increasing demand for compact, high-performance, and integrated full Stokes polarization detectors. In this review, we focus on three advanced research areas concerning integrated full Stokes detectors: those based on material-based platforms, metasurface-enabled architectures and in-situ integrated optical structures. We summarize recent advances in each domain and discuss emerging opportunities and persistent challenges for the development of integrated full Stokes polarization detectors.