Background: Number of patients with tuberculosis (TB) in the region of Surakarta ranked 10th largest in the Central Java, although the government has already implemented the DOTS strategy. One factor contributing to the high number of TB patients is the lack of public knowledge of TB. The population of the city of Surakarta is 552.650 inhabitants and 12.480 of them live in Kalurahan Jagalan. Of the 12,480 people, nearly 60 percent of them have junior high school education and below. This requires education about TB to improve people's understanding of TB with the right method. Objective: to determine the effect of counseling using the lecture method in increasing public knowledge of TB disease in the Sunday Morning Prayer of Jagalan Baiturrohman Mosque. Method: This study used one group pretest and posttest pre-experimental research design involving 84 research subjects. Counseling was conducted with lecture methods on research subjects. Pretest and posttest were conducted to determine the effectiveness of the lecture method counseling. Results: The results showed that the average value of pre-test was 5.48 (1.2) while the average value of the post-test was 7.42 (0.9). The results of the analysis using Wilcoxon statistical test found that there was a significant difference between the mean of the pre-test value with the mean post-test value (p = 0,000). Conclusion: counseling with varied lecture methods is an effective method to increase public knowledge about tuberculosis