The utility model discloses a needle guard (100) which is used for protecting a needle head (210) so as to prevent the needle head from accidental contact. The needle guard comprises a needle head protection cover (110) loaded with a springand an installation base (140). The needle head protection cover (110) rotates from an opening position to a closing position in a pivot mode, wherein the needle head protection cover (110) is separated from the needle head (210) at the opening position, and at the closing position, the needle head (210) is enclosed in the needle head protection cover (110), and the needle head protection cover (110) protects the needle head (210). The space relationship between the installation base (140) and the needle head (210) is changeless. When the needle guard (100) is in use, the installation base (140) is movably connected to the needle head protection cover (110), and is used for starting movement between the opening position and the closing position. The needle head protection cover (110) has a passive state and an active state. When in the active state, the needle head protection cover (110) is used for being pushed towards the closing position. The utility model further discloses a manufacturing method of the needle guard (100) and a needle guard device including the needle guard (100).
