Effects of some factors such as gradation and particle size of aggregate,mass ratio of aggregate to cement,mass ratio of water to cement,admixtures and mixing process on the properties of porous pervious concrete(PPC) including porosity,permeation coefficient and compressive strength were studied.The results indicate,gradation and particle size of aggregate,mass ratio of aggregate to cement are the key factors affecting porosity,permeation coefficient and compressive strength of PPC.Mass ratio of water to cement has minor effect on properties of PPC.Admixtures such as water-reducing admixture,silica fume and polymer latex improve properties of PPC.The mixing process of cement paste encapsulating aggregate method could improve the compressive strength of PPC and reduce its porosity while keeping its permeation coefficient stable.