The Taipei Prosecutors Office said Tuesday the 27-year-old singer is accused of kicking a taxi door after her companion, who allegedly was drunk, dragged the driver out and beat him.
Makiyo has apologized and pledged to stop drinking in the wake of the Thursday night incident.
Takateru Tomoyori of Japan was released on bail pending formal charges, possibly attempted homicide, according to prosecutors.
The driver suffered a brain hemorrhage and two fractured ribs.
News reports said the taxi driver asked Tomoyori and Makiyo to get out after they refused to wear seat belts.