A blood analysis device that can be used by one hand and has enhanced operability. The blood analysis device includes a body case (2) having a blood collection window (1), a finger cover (3) formed integrally with the body case (2) and covering a finger that faces and is in contact with the blood collection window (1), pressing means (5) for pressing the finger, which is inserted in the finger cover and toward the blood collection window (1), a recessed finger hold section (21) formed in a side face of the body case (20), and a pedestal-shaped piercing section (22) provided at the recessed finger hold section (21) and having a piercing opening (22a).
