Abstract: Hot?rolled pure tungsten rods with a total deformation of 60% were fabricated from high?purity tungsten powder via cold isostatic pressing, vacuum induction sintering and multi?pass hot rolling at moderate temperature. A series of isothermal annealing treatments were subsequently performed at 1350 oC for holding durations ranging from 1 h to 32 h. The microstructural evolution and property development of the hot-rolled pure tungsten rods during annealing were systematically investigated by means of metallographic observation, electron backscatter diffraction (EBSD), and hardness and density measurements, combined with Johnson-Mehl-Avrami-Kolmogorov (JMAK) kinetic analysis. The results demonstrate that within the first 8 h of annealing at 1350 °C, the microstructure is dominated by recovery, during which dislocation rearrangement gives rise to subgrain boundaries and the γ-fiber texture intensity decreases. Full recrystallization is triggered when the holding time is extended to 16 h, whereby the deformed grains are eliminated, the texture evolves toward a random orientation accompanied by a weak θ-fiber component, and the grains coarsen to 40-60 μm with a markedly reshaped grain-size distribution. Kinetic analysis reveals that the recrystallization behavior is well described by the JMAK model; however, the obtained Avrami exponent is lower than the theoretical value for ideal recrystallization, indicating that recrystallization is primarily governed by subgrain coalescence and grain coarsening. Moreover, the Vickers hardness decreases gradually from 477.63 HV10 in the as-rolled state and eventually stabilizes at approximately 392.16 HV10, while the relative density fluctuates during annealing, which is attributed to the competitive interplay among vacancy diffusion, pore evolution, and migrating grain boundaries.