Wearable electronic device, comprising: a housing, the housing comprising a rear housing for facing a wearer of the electronic device, wherein a first contact area and a second contact area are distributed on the rear housing; a plurality of first contact electrodes, wherein the first contact electrodes are spaced on the rear housing, directly electrically connected to each other on an inner side of the rear housing, and at least partially exposed to an outer side of the rear housing; and a plurality of second contact electrodes, wherein the second contact electrodes are spaced on the rear housing, directly electrically connected to each other on the inner side of the rear housing, and at least partially exposed to the outer side of the rear housing; and the second contact electrodes and the first contact electrodes are distributed on the rear housing and insulated from each other, wherein at least one first contact electrode and at least one second contact electrode are distributed in the first contact area, and at least one first contact electrode and at least one second contact electrode are distributed in the second contact area, wherein the rear housing has a convex annular area, and a plurality of contact electrodes spaced from each other are distributed in the annular area along a circumferential direction; one side of the annular area is the first contact area, and there is at least one first contact electrode and at least one second contact electrode among the contact electrodes distributed in the first contact area; and another side of the annular area is the second contact area, and there is at least one first contact electrode and at least one second contact electrode among the contact electrodes distributed in the second contact area, wherein a quantity of the contact electrodes is 2N, and N is a positive integer, where N contact electrodes are the first contact electrodes, and the other N contact electrodes are the second contact electrodes; and the N first contact electrodes are sequentially adjacent in the annular area along the circumferential direction, and the N second contact electrodes are sequentially adjacent in the annular area along the circumferential direction. a housing, the housing comprising a rear housing for facing a wearer of the electronic device, wherein a first contact area and a second contact area are distributed on the rear housing; a plurality of first contact electrodes, wherein the first contact electrodes are spaced on the rear housing, directly electrically connected to each other on an inner side of the rear housing, and at least partially exposed to an outer side of the rear housing; and a plurality of second contact electrodes, wherein the second contact electrodes are spaced on the rear housing, directly electrically connected to each other on the inner side of the rear housing, and at least partially exposed to the outer side of the rear housing; and the second contact electrodes and the first contact electrodes are distributed on the rear housing and insulated from each other, wherein at least one first contact electrode and at least one second contact electrode are distributed in the first contact area, and at least one first contact electrode and at least one second contact electrode are distributed in the second contact area, wherein the rear housing has a convex annular area, and a plurality of contact electrodes spaced from each other are distributed in the annular area along a circumferential direction; one side of the annular area is the first contact area, and there is at least one first contact electrode and at least one second contact electrode among the contact electrodes distributed in the first contact area; and another side of the annular area is the second contact area, and there is at least one first contact electrode and at least one second contact electrode among the contact electrodes distributed in the second contact area, wherein a quantity of the contact electrodes is 2N, and N is a positive integer, where N contact electrodes are the first contact electrodes, and the other N contact electrodes are the second contact electrodes; and the N first contact electrodes are sequentially adjacent in the annular area along the circumferential direction, and the N second contact electrodes are sequentially adjacent in the annular area along the circumferential direction.