Robotic finger and robotic hand

A robotic finger (100) comprises an intermediate finger segment (10), a base finger segment (20), an end finger segment (30), a variable-stiffness connecting rod (40), and a driving device (50). The two ends of the intermediate finger segment (10) are rotationally connected to the base finger segment (20) and the end finger segment (30) respectively. The two ends of the variable-stiffness connecting rod (40) are rotationally connected to the base finger segment (20) and the end finger segment (30) respectively. The intermediate finger segment (10), the base finger segment (20), the end finger segment (30), and the variable-stiffness connecting rod (40) form a four-link mechanism (60). The driving device (50) is configured to drive the intermediate finger segment (10) to rotate with respect to the base finger segment (20), so as to drive, by employing the four-link mechanism (60), the end finger segment (30) to rotate with respect to the intermediate finger segment (10). A robotic hand (200) is also provided, and comprises the robotic finger (100).