Why is it important to know the development of tuberculosis and tuberculosis treatment? This is important for understanding the progression of the disease, for doctors to develop a treatment plan, and for recovery. What is primary TB? Primary TB is defined as patients who are first detected and have not received any anti-tuberculosis drugs, or patients who have been treated with irregular and unreasonable anti-tuberculosis therapy for no more than one month after detection of TB. However, as long as the patient actively cooperates with the doctor and insists on early, regular, reasonable and complete chemotherapy, the infectiousness can disappear quickly within 2-4 weeks, and the cure rate can be over 95%. The key is to follow medical advice, obey management, complete the course of treatment, and strive for a complete cure. What is retreatment of tuberculosis? Relapsed TB refers to patients who have failed initial treatment or relapsed after cure, or who have received irregular and unreasonable chemotherapy for more than one month after TB was discovered. In the practice of prevention and treatment, most of the cases of relapsed TB are complicated, often characterized by heavy disease and poor health, and mostly caused by irregular or unreasonable chemotherapy (not adhering to treatment as required by doctors or treated in non-tuberculosis specialized institutions). At this time, the tuberculosis bacilli have developed drug resistance, so treatment is much more difficult than for first-treatment tuberculosis. The key to the treatment of relapsed tuberculosis is for the patient to establish confidence in overcoming the disease, actively cooperate with the doctor, choose a chemotherapy regimen consisting of anti-tuberculosis drugs based on drug sensitivity tests, and adhere to the completion of treatment.