大多数肺结核病人的临床表现为慢性,生活完全能自理。不少病人不知自己患病而仍在继续工作,导致本病的扩散。因此,早期诊断、及时而彻底的治疗,对于控制传染源,防止本病扩散尤为重要。结核杆菌侵入人体以后,如果发病首先是原发性结核,然后出现血行性病变,最后出现继发性结核。因此必须着眼于原发结核的诊断和治疗,使疾病终止于原发性结核阶段不再进展。在我国通过呼吸道感染的结核病约占80～90%,因此原发性结核一般就指原发性肺结核。它包括感染后直接进展所引起的病变:原发综合征、纵隔淋巴结结核,以及由它们引起的肺部病变如支气管肺炎等。大多数原发结核能够自愈。根据调查未经接种卡介苗, The clinical manifestations of most tuberculosis patients are chronic, and their lives are completely self-sufficient. Many patients do not know their own illness and still continue to work, leading to the spread of the disease. Therefore, early diagnosis, timely and thorough treatment is particularly important for controlling the source of infection and preventing the spread of this disease. Mycobacterium tuberculosis invade the body, if the onset of primary tuberculosis, and then hematogenous lesions, and finally secondary tuberculosis. Therefore, we must focus on the diagnosis and treatment of primary tuberculosis, the disease stopped in the primary stage of tuberculosis no longer progress. Tuberculosis in our country through respiratory tract infection accounts for about 80 ~ 90%, so primary tuberculosis generally refers to primary tuberculosis. It includes lesions caused by direct progression after infection: primary syndrome, mediastinal lymph node tuberculosis, and lung diseases such as bronchopneumonia caused by them. Most primary tuberculosis can heal. According to the survey without BCG vaccination,