The present invention provides an arm wrap strip of sphygmomanometer, which comprises a first strip with elasticity, and a second strip with elasticity and partially surrounding the exterior of the first strip wherein, the first strip is opened with a through hole, and the through hole is provided with having an air tap communicated with the through hole and the second strip is opened with a guiding rail along the arc surface of the second strip opposite to the position of the air tap for limiting the sliding displacement of the second strip along the arc surface of the first strip. Therefore, the arm wrap strip of sphygmomanometer according to the present invention can be elongated to fit the thicker arm of an adult, or shortened to fit the thinner arm of a child, so as to provide a more comfortable and fitting product for the user.本發明提出一種血壓計束臂捲板,所述的血壓計束臂捲板包括有一具彈性的第一捲板,以及一具彈性且局部繞設於該第一捲板外的第二捲板;其中,該第一捲板開設有一通孔,該通孔具有一與該通孔相通的氣嘴;而該第二捲板相對於該氣嘴位置沿第二捲板弧面開設有一限制該第二捲板可沿該第一捲板的弧面滑動位移的導軌;如是,本發明的血壓計束臂捲板即可伸長而適合成人較粗的手臂,或縮短而適合孩童較細的手臂,以提供使用者更舒適且更吻合的產品。1‧‧‧血壓計束臂捲板10‧‧‧第一捲板11‧‧‧通孔111‧‧‧氣嘴20‧‧‧第二捲板21‧‧‧導軌22‧‧‧末端
