The present invention relates to a breast health care device, which comprises: a main body, which comprises at least one cover portion and at least one node module, which is disposed on the cover portion. The node module comprises a light-emitting unit, a photo detector, or the combination thereof, wherein the light-emitting unit provides a light of predetermined wavelength to a breast tissue, and the photo detector detects a first signal generated from the breast tissue. Thus, users can directly achieve detection for the health condition of breasts by wearing the bra of the disclosed breast health care device of the present invention, and the disclosed health care device can transmit the detection results to an external health-care platform such as hospitals or medical centers immediately.
