In view of lacking research on the influence of compaction characteristics on the dynamic modulus of porous asphalt mixture (Porous Asphalt Concrete, PAC) in China, the gyratory compaction method (Superpave Gyratory Compactor, SGC) was used to form the rotating compaction specimens with three different gradations and designed porosity by indoor molding of PAC-13(1), PAC-13(2) and PAC-13(3). The uniformity of PAC rotating compaction was analyzed and the least square method was used to fit the main curve of porous asphalt mixture with three gradations according to the time-temperature equivalent principle. The displacement factor and model parameters were calculated. The results show that the specimen with higher loose paving height has larger void ratio, and the target compaction can be achieved by controlling the number of rotary compaction. The uniformity coefficient of void distribution is proposed, which is closer to 0, indicating that the void distribution of the mixture is more uniform, and it can be used to guide the indoor rotary compaction test. The dynamic modulus of porous asphalt mixture is affected by the coupling effect of porosity, loading frequency and ambient temperature of the molding specimen. The porous asphalt mixture has good fitting degree with the Sigmoidal model, and the dynamic modulus calculation formula of any void ratio at different temperatures and frequencies is proposed, which can provide material parameters for the subsequent finite element structural design.