A wearable patch for measuring electrical signals from a user's body includes a main substrate, a circuit substrate on the main substrate, the circuit substrate comprising a conductive circuit； a first conductive electrode circuit in electric connection with the conductive circuit and including a portion on a lower surface of the main substrate； and an adhesive-conductive assembly attached to the lower surface of the main substrate. The adhesive-conductive assembly includes a support layer having a first opening and a conductive gel layer inserted into the first opening and configured to be in contact with a user's skin, a first adhesive layer to bond to portions of upper surfaces of the conductive gel layer and a portion of an upper surface of the support layer, and a second adhesive layer to bond to portions of lower surfaces of the conductive gel layer and a portion of a lower surface of the support layer.
