A pain and tissue tension detector includes a casing, a linkage portion, a first sensor head, and a pressure sensor; the linkage portion is disposed in the casing; the first sensor head has a spherical shape. A first contact portion, a first sensor head is disposed at one axial end portion of the linkage portion and the first contact portion protrudes out of the housing; a pressure sensor is disposed at the other axial end portion of the linkage portion; when the first contact portion When the human body is pressed, the first contact portion is retracted inside the housing and drives the linkage portion to transmit pressure to the pressure sensor.一種疼痛及組織張力偵測儀,包含一殼體、一連動部、一第一感測頭及一壓力感測器;連動部設置於殼體內;第一感測頭具有一呈圓球狀之第一接觸部,第一感測頭設置於連動部其中一軸向端部且第一接觸部突出於殼體外;壓力感測器設置於連動部另外一軸向端部;當第一接觸部按壓人體時,第一接觸部內縮於殼體並驅動連動部將壓力傳達至壓力感測器。