Convenient-to-move heart rate detecting device

The invention relates to the technical field of portable detection devices, in particular to a convenient-to-move heart rate detecting device. The device comprises a box body in which a heart rate detecting module is arranged, an annular accommodation groove is formed in the outer side wall of the box body, a striped-shape first connecting hole and a strip-shaped second connecting hole which are communicated with the interior of the box body are formed in the two sides of the inner wall of the accommodation groove, a first connecting belt and a second connecting belt which are used for fastening the box body to the wrist are arranged in the accommodation groove. According to the device, a metal connecting head on the inner side of the second connecting belt is adopted to be clamped into ametal connecting ring on the first connecting belt to connect flexible metal connecting pieces arranged on the two connecting belts, power is supplied for an infrared heart rate sensor and an internalheart rate detecting modu