The embodiment of the utility model discloses dark vein is applied ointment or plaster, apply ointment or plaster and the second is applied ointment or plaster including integrated into one piece first, first apply ointment or plaster to apply ointment or plaster with the second be connected, wherein, the first middle part of applying ointment or plaster is provided with the visual observation window, is provided with tip side fixing device on first the applying ointment or plaster is connected with visual observation window marginal facies, visual observation window and tip side fixing device's junction is provided with the opening, the visual observation window is transparent applying ointment or plaster, the front that the second was applied ointment or plaster is provided with the two-sided sticky tape of binding, and the back that the second was applied ointment or plaster is provided with the emulsion layer that can breathe freely, the second is applied ointment or plaster and is bonded with the first activity of applying ointment or plaster through the two -sided sticky tape of binding. The utility model provides a dark vein is applied ointment or plaster integrated into one piece demolishs the convenience, elegant appearance, and fixed effect is better, can effectively reduce medical staff's work load, improves work efficiency.