The invention provides a
humanoid robot and a dexterous hand thereof. The
humanoid robot comprises a palm shell defining a containing cavity; the
thumb comprises a first
rotary actuator, a second
rotary actuator, a transmission
assembly and a
thumb assembly, the first
rotary actuator and the second rotary
actuator are fixedly connected to the inner wall of the containing cavity, the transmission
assembly is in transmission connection between the first rotary
actuator and the second rotary
actuator, and at least part of the
thumb assembly extends out of the containing cavity; the thumb component is in transmission connection with the transmission component; each finger comprises a finger piece and a
linear actuator, the linear actuators are fixedly connected to the
cavity wall of the containing cavity, at least part of each finger piece extends out of the palm shell, and each finger piece comprises a connecting base, a finger near
knuckle, a finger far
knuckle, a finger far
knuckle and a finger far knuckle rubber
coating; and a connector board electrically connected to the first rotary actuator, the second rotary actuator, and the
linear actuator. The dexterous hand is compact in
layout, small in occupied space and high in movement precision, and the grabbing force of the dexterous hand is improved.