The invention provides a high-viscosity modified asphalt permeable road surface, which is prepared by the following steps: weighing asphalt matrix and an emulsifying agent and heating; weighing rubber powder, plastic powder, dispersant and auxiliary agent into the asphalt matrix, and heating and mixing to obtain a mixture; mixing and developing the mixture to obtain high viscosity modified asphalt; paving the high viscosity modified asphalt; rolling the paved high-viscosity modified asphalt to obtain a high-viscosity modified asphalt permeable road surface. The rubber powder and plastic powder are doped, so that the modified asphalt has higher viscosity, and meanwhile the rubber is emulsified and modified before doping, so that the rubber powder, the plastic powder and the asphalt matrix are interlaced and penetrated into each other to form a network structure, the viscosity is increased and the shearing force of the asphalt at room temperature can be improved, and the service life of the present application can be effectively improved.