The Hetai goldfield with gold deposits strictly hosted by mylonite zones are considered to be a typical gold mineralization example related to ductile- shear deformation and have the largest gold reserves in the Guangdong Province. However, the shear deformation conditions versus the gold mineralization remain unclear. The Gaocun and the Yunxi gold deposits confined to ML11 and ML9 mylonite zone respectively, are the significant gold producers in the goldfield. The magnetic petrology and anisotropy of magnetism susceptibility (AMS) of the barren and auriferous mylonite in the shear zones were studied after macroscopic deformation and petrography characteristic observation. The x- T curves of mylonite show the Curie temperature of pyrrhotite, in combination with the hysteresis loops, isothermal remnant magnetism (IRM) and petrography characteristics, indicating biotite and pyrrhotite are the dominant magnetic bearing minerals of the mylonite with no magnetite, and the contribution of pyrrhotite is much larger than the biotite in Hetai goldfield. Therefore, the AMS characteristics are effective in showing the deformation of the shear zones. The barren mylonite in ML11 mylonite belt (Gaocun deposit) has a similar mean magnetism susceptibility value Km (＜500×10-6 (SI)), corrected anisotropy degree Pj, ellipsoid shape factor T, magnetism foliation F and lineation L with the ML9 mylonite belt (Yunxi deposit). Moreover, both the shear zones show consistent orientation of principle stress, nearly horizontal NNW- SSE striking maximum principle stress σ1 (K3) and steep dip NEE- SWW striking minimum principle stress σ3 (K1). Kinematic vorticity of two shear zones are also undistinguishable, varying from 0. 12 to 0. 65, i.e. less than 0. 71. These characteristics suggest that both the shear zones in the Hetai goldfield were subjected to Indosinian NNW- SSE trending severe compression which resulted in the mylonite as the S and SL tectonites with intense oblate stain ellipsoid, and the pure shear is dominant in the shear deformation. However, the AMS characteristics of auriferous mylonite are distinct from the barren mylonite, with the Km and Pj value of the former larger than that of the latter, suggesting that the mylonite deformation strength tends to have positive correlation with the gold mineralization. Consequently, in the shear zone, there is a positive correlation between the deformation intensity of mylonite and its ore- bearing potential, and the superimposed brittle- ductile deformation in the Yanshanian makes the maximum strain principal axes (magnetic lineation) steep, which is more conducive to the brittle fracture and gold enrichment in the later stage.