Carapax Trionycis has the functions of softening and resolving hard mass, nourishing yin and suppressing yang.

Carapax Trionycis is mainly used for abdominal mass, chronic malaria and hepatosplenomegaly. Fever due to yin deficiency, night sweats due to bone steaming, fever impairing yin, and wind deficiency moving internally.

Tortoise shell is used for deficiency of kidney yin, hot flashes due to bone steaming, night sweats and nocturnal emission, or hyperactivity of yang due to yin deficiency, dizziness and tinnitus, fever due to yin deficiency and wind motion. It can also be used for liver and kidney deficiency, waist and foot weakness, awkward fontanel and delayed teeth. Metrorrhagia and menorrhagia caused by yin deficiency and blood heat.