The instrument is a fully automated smoke generator with functions of automated cigarette sorting, loading, cigarette lighting, butt pushing when burning to set length, cigarette extinguishing, replenishing new cigarettes, etc. It improves consistency of cigarette loading and tests, reduces user's workload substantially, provides highly accurate equipment for cigarette smoke analysis and toxicology tests. In accordance with ISO3308 and ISO4387 standard smoking methods, it can be used for cigarette smoke poisoning and toxicology tests. Independently controlled precision smoking piston makes smoking mode flexible and can be individually set parameters to meet different requirements.