In this paper, partially coherent beams (PCBs) are modulated by circular Airy amplitude to solve the problem of beam expansion of PCBs. The effects of Airy function scaling factor, truncation radius, and coherence length on the self-focusing distance and focusing intensity of the beam, as well as the optical intensity scintillation index of partially coherent circular Airy beam in turbulent environment, are studied. The results show that by modulating the circular Airy amplitude, the focusing distance of PCBs can be controlled, and the beam divergence can be reduced while retaining PCB to combat turbulence and reducing intensity flicker. The light intensity flicker at the focal point is further reduced compared with the original PCB.