In order to study the interaction ability and rheological properties of asphalt mastic in chilly areas, the dynamic shear rheometer（DSR） was used to carry out the frequency sweep tests of limestone and granite powder asphalt masticunder different freeze thaw cycles. The results show that master curves of asphalt mastic are well superimposed at high frequency and low temperature regions but bifurcated seriously in low frequency and high temperature regions before freeze thaw and 59 freeze thaw cycles, which indicates that asphalt mastic is a homogeneous blend system at low temperature, but there exists “time temperature superposition failure” at high temperature. According to the analysis of master curves, Han diagrams, vGP diagrams and Cole Cole diagrams, the asphalt mastic exhibits obvious phase separation at low temperature after 59 freeze thaw cycles. The curves of Cole Cole diagram no longer show characteristic of single semicircular arc. The interaction ability of asphalt mastic is weakened. And the micro interface between asphalt and mineral powder filler has been destroyed.