Based on the crossspectral density and the unified theory of coherent and polarization, the intensity expression of the Radially Polarized Partially Coherent Spiral Bessel Beam (RPPCSBB) can be significantly deduced. The propagation properties of the beam were also investigated. The RPPCSBB transmits in a spiral path with a fixed distance in free space by the theoretical analysis and numerical calculation. During the transmission, the beam gradually evolves from a spiraling hollow beam to a spiraling Gaussian beam, and the transmission distance is related to the coherence length. The corresponding beam polarization angle and degree are also related to the spiral radius and the coherence length, and the polarization degree relates to the transmission distance. However, the coherence length, transmission distance, and the spiral radius do not affect the distribution of the beam polarization ellipticity.