Disclosed is a blood collection device capable of controlling penetration depth. The blood lancing device comprises a main body, a blood lancet, and an actuation device. The main body is in configuration of a hollow housing and comprises a manipulation end and an action end. The action end has an end face that is provided with a through hole and communicated with the main body. The blood lancet and the actuation device are arranged in the interior of the main body enabling the blood lancet needle to pierce outward the through hole formed to the action end of the main body via the actuation device. The end face of the action end is provided with at least one depth control member. The depth control member comprises at least one abutting protrusion that protrudes from the end face of the operation end and located at a site spaced from the through hole and the abutting protrusion comprises an extended abutting end. Accordingly, a portion of a human body for blood collection can be directly abutted against the end face of the action end of the main body, or alternatively, positioned against the extended abutting end of the abutting protrusion to allow the blood collection portion of the human body to form different spacing distances from the through hole, so as to achieve a practical progressiveness and a better industrial utilization benefit of fast control of the penetration depth of the blood lancet under the conditions of the simplest structure and the most saved cost.一種可控制穿刺深度之採血裝置,所述採血裝置包括一本體、一採血針以及一掣動裝置所構成,其中該本體為中空殼體型態且具有一操控端以及一作用端,其作用端的端面係設有一穿透孔與本體連通,而所述採血針與掣動裝置係裝設於本體內部,且令採血針能夠透過掣動裝置向外穿出本體作用端所設穿透孔;其中該作用端端面係設有至少一深度控制構件,該深度控制構件包括凸設於作用端端面且位於穿透孔間隔位置處之至少一抵靠凸部,且該抵靠凸部具有一延伸抵靠端,藉此,人體採血部位係可直接抵靠於本體作用端的端面,或者置放於抵靠凸部的延伸抵靠端,而能夠令人體採血部位與該穿透孔之間形成不同間隔距離,故能在結構最簡易與成本最節省的條件下,達到快速控制採血針穿刺深度之實用進步性與較佳產業利用效益。A‧‧‧採血裝置10‧‧‧本體11‧‧‧操控端12‧‧‧作用端121‧‧‧穿透孔13‧‧‧採血針14‧‧‧掣動裝置20‧‧‧深度控制構件21‧‧‧抵靠凸部22‧‧‧延伸抵靠端
