Beautifying instrument with replaceable head

The utility model discloses a beauty instrument with a replaceable head, which comprises a replaceable head and a handheld body, and the replaceable head comprises three contact points and a frequency generator; the handheld body comprises a main control circuit board; the replaceable head part is electrically connected with the main control circuit board through the first contact point and the second contact point so as to supply power to the frequency generator; the frequency generator is electrically connected with the main control circuit board through a third contact point so as to send a frequency signal; and the main control circuit board is used for identifying different heads according to the frequency signals. The replaceable head can be connected with the handheld body only by using a small number of contact points, and the handheld body can identify the currently used head by detecting the sending frequency of the replaceable head, so that the false identification rate is low, and the replaceable