The present invention relates to medicine delivery device (10) comprising: shell (11), the shell are configured to receive the cylindrantherae (12) for accommodating drug Injection needle (13), the injection needle have proximal end (37) and distal end (38) It injects needle holder (40), the injection needle is fixed to the injection needle holder (40), and the injection needle holder (40) can move relative to shell in inoperative position and using between position With needle cap (54), the needle cap is releasably connecting to the injection needle holder, and closes the proximal end of the injection needle (13). The medicine delivery device is constructed so that: pushing the needle cap to lead to the injection needle holder towards the cylindrantherae, never operating position direction is mobile using position, wherein in the inoperative position, the distal end of the injection needle is separated from cylindrantherae, and position is used described, the distal end of the injection needle can engage cylindrantherae.
