The present invention discloses a medical cotton ball automatic production line which comprises a hopper, an automatic bottle arrangement device, a cotton ball molding machine, a stirring device, an automatic cotton loading device, an automatic infusion devices, an automatic cap screwing device, an automatic sealing device and a PLC control system. The PLC control system is connected to the automatic bottle arrangement device, the cotton ball molding machine, the stirring device, the automatic cotton loading device, the automatic infusion devices, the automatic cap screwing device, and the automatic sealing device. The medical cotton ball automatic production line has the advantages that the machinery automatic processing and manufacturing is employed in the cotton ball production process, 2 to 3 people are employed in whole line start-up, labor and time are saved, the production cost is reduced, and the condition of pollution caused by manual manufacture is avoided.