痰是呼吸道的“垃圾”。它是从呼吸道和肺里排出的病理性分泌物,含有吸入的尘埃、细菌、病毒、真菌、呼吸系统脱落的细胞、脓血性分泌物、结核干酪样坏死物等。痰能传播多种疾病,主要有感冒、各型流感、结核病、各种肺炎、支气管炎、麻疹、水痘、白喉、猩红热、百日咳、流行性脑脊髓膜炎等。健康者应该是没有痰的,即使有,应是灰白色,稀薄,量很少。如得了各种呼吸系统疾病,则痰量便会增多,痰的性质、粘度、颜 Phlegm is the “rubbish” of the respiratory tract. It is a pathological discharge from the respiratory tract and lungs containing inhaled dust, bacteria, viruses, fungi, cells shed from the respiratory system, purulent discharge, tuberculous caseous necrosis and the like. Phlegm can spread a variety of diseases, mainly cold, all kinds of flu, tuberculosis, a variety of pneumonia, bronchitis, measles, chickenpox, diphtheria, scarlet fever, whooping cough, epidemic cerebrospinal meningitis. Healthy people should be no sputum, if any, should be gray, thin, very small amount. If you have a variety of respiratory diseases, the amount of sputum will be increased, the nature of sputum, viscosity, Yan