Provided in the present invention are functional bamboo salt and a method for manufacturing the same, to have an excellent effect of providing functional bamboo salt with increased anti-oxidation or antitumor activity. The purpose of the present invention is achieved by the steps of: collecting five kinds of salt materials; selecting a salt material with a great mineral content; manufacturing nine kinds of bamboo salt having the salt selected in the former step as a raw material; testing anti-oxidation and antitumor activities of the nine kinds of bamboo salt; and determining a method for manufacturing bamboo salt having an anti-oxidation or antitumor activity.본 발명은 기능성 죽염 및 이의 제조방법을 제공함으로써 항산화 또는 항암 활성이 증대된 기능성 죽염을 제공하는 뛰어난 효과가 있다.