Streptomycin is an antibiotic extracted from the culture medium of Streptomyces griseus.Belongs to aminoglycoside alkalescent compound, it and mycobacterium tuberculosis bacterium body RNA protein body protein is united in wedlock, had interfered with the action that mycobacterium tuberculosis protein synthesizes, kill thereby or restrain the action that mycobacterium tuberculosis grows.Because streptomycin intramuscular injection of pain response is relatively small, suitable for clinical use, as long as the application of the appropriate object selection, dose and more appropriate, most patients can long-term injection (generally about 2 months).Therefore, it has remained the main drug in anti-tuberculosis treatment for decades.