The invention belongs to the technical field of PVC production and machining, and particularly relates to a PVC profile raw material automatic metering, mixing, conveying, storing and feeding process.The process comprises a metering procedure, a mixing procedure and a conveying storage procedure; the metering procedure comprises multiple raw material bins, the discharging ends of the raw materialbins are connected with a spiral constant weight feeder, the spiral constant weight feeder is connected with a mixing tank in the mixing procedure through a first vertical lifting machine, the interior of the mixing tank is sequentially divided into a pre-stirring chamber, a heating stirring chamber and a cooling stirring chamber from top to bottom through a first partition board and a second partition board, a first stirring mechanism, a second stirring mechanism and a third stirring mechanism are arranged in the pre-stirring chamber, the heating stirring chamber and a cooling stirring chamber, in the conveying storage procedure, a spiral conveyor connected with an opening in the bottom face of the mixing tank is included, and the discharging end of the spiral conveyor is connected withthe storage tank through a second vertical lifting machine. The process has the beneficial effects that the PVC profile raw material production and machining efficiency is improved, and the productionand machining cost is reduced.