A kind of detecting rod device with cotton ball cover generates machine comprising an electric current, at least one electrical connection what electric current generates the probe and at least one cotton ball cover of machine； The cotton ball cover includes the cover around a probe for being provide with what probe, an and cotton balls portion on the fixed what cover, the cover includes the surrounding wall of a hollow and annular, and at least one setting the what surrounding wall inner wall and removably position the what probe on the first positioning region, the cotton balls portion be the side of the fixed what surrounding wall and paste touching the what probe probe on. Its effect by the cotton ball cover is removably positioned on the what probe using the first positioning region of its cover in what, and cotton ball cover is effectively avoided to fall easily because of touching, in addition the design of detachable type, and is reached and is convenient for changing, health and other effects.一種具有棉花球罩的探棒裝置，包含一電流產生機、至少一個電連接於該電流產生機的探棒，及至少一個棉花球罩；該棉花球罩包括一罩設於探棒之探頭周圍的罩體，及一固設於該罩體上的棉球部，該罩體包括一中空環狀的圍繞壁，及至少一設置於該圍繞壁內壁面且可拆離地定位於該探棒上的第一定位部，該棉球部是固設於該圍繞壁之一側並貼觸於該探棒的探頭上。其功效在於，藉由該棉花球罩是利用其罩體的第一定位部來可拆離地定位於該探棒上，有效避免棉花球罩輕易地因為觸碰而掉落，加上可拆離式的設計，而達到方便更換、衛生等功效。
