The pneumatic hose cleaner is specifically designed for cleaning the inner walls of hydraulic hoses, high-pressure oil lines, and wire-reinforced hoses. Utilizing compressed air to propel cleaning projectiles, it rapidly removes oil residue, metal shavings, and impurities from within the hose. Easy to operate and ensuring a thorough clean, it is ideal for pre-assembly preparation of hose assemblies, thereby enhancing pipeline cleanliness and extending the service life of the system.