Provided are an ion generation target and a treatment apparatus using the same. The treatment apparatus includes an ion generation material generating the ions by incident laser beam, the ion generation material generating a bubble having a hemispheric shape, a support supporting the bubble having the hemispheric shape, a bubble generation member for generating the bubble having the hemispheric shape on the support by using the ion generation material, and a laser radiating laser beam onto a surface of the bubble to generate ions from the ion generation material, thereby projecting the ions onto a tumor portion of a patient.
