Abstract: The percolation research of condensate gas reservoir has its particularity and is more difficult than that of conventional reservoir due to the intricate phase variations. The existing oil and gas distribution models for condensate gas reservoir are based on relative permeability curves measured with steady-state or unsteady-state methods, which does not consider the blocking of condensate liquid and may overestimate the filtration capacity of the condensate oil, resulting in certain deviations between the model results and the actual production status in the field, so the models can’t accurately describe the oil and gas distribution in reservoirs and evaluate the productivity of gas wells. Moreover, there are few studies on the oil and gas distribution in condensate gas reservoirs at different development stages based on reservoir microscopic heterogeneity so that there is no necessary theoretical basis for full-cycle production system making for gas wells. In view of this, a relative permeability measurement method of pseudo steady-state which can reflect the filtration capacity of fluids in condensate reservoirs is introduced to establish a set of full-process methods for oil and gas distribution description according to reservoir microscopic pore size and capillary pressure distribution and combined with the oil and gas filtration characteristics at different production stages in gas wells. The methods are applied in the optimal design of production parameters for condensate gas reservoirs and the results show that the influence of pseudo steady-state relative permeability on oil and gas production performance should be highlighted when large pressure difference is adopted in the condensate reservoirs at the late production stage, and finally the proposed methods are validated by the actual production performance in condensate gas wells.