The study was to describe the cascade of screening, diagnosis, and referral to TB treatment for HIV patients in OPC to provide evidence for policy-makers in strengthening management of HIV-TB patients. Of 653 HIV patients, 11 (1.7 percent) had history of TB disease before enrolled for care at OPC. TB clinical screening in the OPC was high (92.5 percent) at the first visit and ranged from 96.3 percent to 100 percent at subsequent re-examinations. Among those screened with TB clinical signs (+), with one of the four symptoms, cough, fever, night sweats or weight loss, through their re-examination visits, the proportion of being tested by x-ray or sputum were low and fluctuated from 28.6 percent to 100 percent and 0 percent to 29.4 percent, respectively. Overall, among 416 patients with positive TB diagnosis, only 29.1 percent were prescribed for sputum testing, 75.5 percent for x-ray, 3.4 percent were referred to TB facilities for diagnosis and treatment but all of these 14 medical records had no information of TB treatment and there was still 12.5 percent (52/416) had no record of further testing or referral. Of 62 patients who was screened positive for TB (+) but was not tested by X-ray and sputum testing and should have been referred to provincial TB hospital, only six (9.7 percent) were referred successfully.