A yoyo capable to be manually accelerated when held by hands comprises two spinning bodies (1), a button (2) mounted at a center position of an outer side of a first spinning body of the spinning bodies (1), a side cap (3) provided at a center position of an outer side of a second spinning body of the spinning bodies (1), a manual acceleration mechanism provided inside the two spinning bodies (1) and connecting the two spinning bodies (1) as a whole, and a bearing (4) disposed between the two spinning bodies (1) for winding a yoyo string;
- two ends of the manual acceleration mechanism are connected with the spinning bodies (1);
- by pressing the button (2), the manual acceleration mechanism drives the spinning bodies (1) to spin simultaneously.