Abstract: Objective  To evaluate the network direct reporting quality for infectious diseases of TB at all medical institutions and find out the existing problems for the further improvement of reporting quality. Methods  The data of network direct reporting for infectious diseases of TB were collected and analyzed. The report area and entry time as the qualification download before the day of the TB reporting cards. All the TB reporting cards were collected from February 1, 2012 to January 31, 2013. We used the timely reporting rate, information missing rate and lack of information rate to analysis of 200 015 pulmonary TB reporting cards in Guangdong province. Results  The timely reporting rate, information missing rate and lack of information rate at all medical institutions were 98.59%（197 189/200 015）, 77.01%（154 040/200 015）and 1.07%（2144/200 015）respectively. The timely reporting rate, information missing rate and lack of information rate in TB institutions（99.49%，24 669/24 795） were higher than the medical institutions（98.46%，172 520/175 220） and the difference is statistically significant（χ²=166.32，P<0.001）. The lack of information for TB report cards included ID card number［63.01%（126 027/200 015）］, address of TB cases［13.64%（27 283/200 015）］, parents name of TB cases［11.93%（131/1098）］, work address［32.73%（15 968/48 792）］ and telephone numbers［25.51%（51 023/200 015）］. The missing information rate is lower in the TB institutions（0.71%，175/24 795）than non-TB institutions（1.12%，1969/175 220） and the difference is statistically significance（χ²=35.78，P<0.001）. Conclusion  The quality of TB reporting card is higher in TB institutions. We should improve the reporting quality in other medical institutions.

Key words: Tuberculosis, pulmonary/prevention &, control, Registries, Communicable disease control, Quality control, Computer communication networks, Information management, Guangdong province