The disposable safety lancet consists of a housing, an inner cap guard, an outer cap guard, a needle, a handle or needle holder, a lever, and a spring. Disposable safety lancet is a sterile, disposable peripheral blood collector. The product uses a touch pressure design, so that the built-in needle of the safety lancet can quickly complete a pop-up and retraction, forming an incision of the expected depth and width in the sampling area. After activation, the needle will retract into the collector and cannot be reactivated, reducing the chance of accidental needle stick injuries. The device is a standalone device, and the needle is sterile until the cap is removed.