Abstract: A wearable toy robotic arm, related to a technical field of building toys, including an execution device and a control. The execution device includes a first frame body, a first transmission mechanism, a mechanical gripper, and a first reset elastic component. The mechanical gripper is disposed on the first frame body, the first transmission mechanism includes a first transmission component, the first transmission component is configured to drive the mechanical gripper to open, and the first reset elastic component is configured to drive the first transmission component to reset. The control device includes a second frame body, a first instruction mechanism, at least one second reset elastic component, and a first sliding component. The first instruction mechanism is rotatably disposed on the second frame body, the second reset elastic component is configured to drive the first instruction mechanism to reset.