Voice tremor enhancement is the vibration enhancement of resonance caused by the sound waves that originate in the larynx and travel along the trachea, bronchi and alveoli to the chest wall when the examiner touches the person being examined to produce speech. Voice tremor enhancement: It is seen in lobar pneumonia, massive pulmonary infarction, cavitary tuberculosis, lung abscess and lung cancer. So, how is the enhanced voice tremor caused? The following are the causes of voice tremor enhancement: 1. The huge cavity in the lung near the pleura, the sound waves resonate in the cavity, especially when there is inflammatory infiltration around the cavity and adhesion to the chest wall, it is more conducive to sound wave transmission, so that the voice tremor is enhanced. (cavity type tuberculosis, lung abscess). 2, there is inflammatory infiltration in the alveoli, solid lung tissue so that the fibrillation is well conducted. (lobar pneumonia solid stage, pulmonary obstruction).