The invention relates to the field of fireworks, in particular to feeding and matching mechanisms for a firework propellant production line. The feeding mechanism comprises a plurality of stirring cylinders arranged side by side, and a supporting frame for fixing the multiple stirring cylinders; and each stirring cylinder comprises a cylinder body and a first stirring motor, the first stirring motor is provided with a stirring shaft, the end of the stirring shaft is provided with a stirring paddle, the first stirring motor is fixed to the top of the supporting frame, and the stirring shaft vertically downwards stretches into the cylinder body. The matching mechanism comprises a material frame; a material cylinder is arranged in the position, corresponding to each stirring cylinder, of the material frame; a screen plate is arranged in the position, located under each material cylinder, of the material frame; a set of net holes are formed in the positions, corresponding to each material cylinder, of the corresponding screen plate; and the hole diameters and the number of each set of net holes are all different. According to the feeding and matching mechanisms for the firework propellant production line, automatic raw material stirring and matching can be achieved, compared with manual operation, the production efficiency of the production line is higher, and both the stirring uniformity and the matching quality of raw materials can be effectively ensured.