Provided is a gastritis and gastric ulcer-treating agent, which is prepared and developed by processing solar salt and bamboo tree into heat-treated purple salt, in which the heat-treated salt, which is prepared by firstly heat-treating mineral rich solar salt and bamboo tree at a high temperature, that is, 1,100\xb0 C. A first adjustment mechanism is disposed near the first end and a second adjustment mechanism is disposed near said second end. The first tongue fits into the first groove to form a first tongue and groove interlock, which is maintained with a closure.