The invention discloses an application of a quinine compound in preparing anti-tubercle bacillus drugs. A structure general formula of the quinine compound of the invention is shown in a formula (1), wherein R is H or OH. In the invention, aiming to current situations that the current tuberculosis has high morbidity, and multidrug-resistant tuberculosis (TB) strains of tubercle bacillus occur so that the morbidity and mortality of the tuberculosis are in a rising trend, and according to characteristics of anti-tubercle bacillus and tolerance tubercle bacillus activities of the quinine compound, the quinine compound is used for preparing the anti-tubercle bacillus drugs. The quinine compound of the invention is derived from marine microorganisms, is easy to be extracted, has low cost and wide application prospect, and can be used for preparing the anti-tubercle bacillus drugs.