The invention discloses a plastic cup for exercise and fitness capable of achieving magnetic rotation cooling. The plastic cup structurally comprises a plastic cup body, a cup sleeve and a magnetic cooling device; the plastic cup body and the cup sleeve are sleeved, the cup sleeve passes through the middle end of the exterior of the plastic cup, the magnetic cooling device penetrates through and sleeves the inner wall of the plastic cup, and the magnetic cooling device comprises a hand buckle device, a magnetic driving rotating device and a driven magnetic cooling rotating fan, the hand buckledevice is connected with the magnetic driving rotating device to the outer side of the cup sleeve, and the magnetic driving rotating device is arranged at the middle end of the plastic cup interlayer. Compared with a traditional plastic handheld sport water bottle, the anti-skid cup sleeve can be pulled back and forth through the hand buckle so that magnetic fields of a magnet at the cup middle layer and a middle magnet of an internal rotating fan can be attracted, the internal rotating fan rotates rapidly, hot drinks inside the cup body can be rapidly cooled, the hot drinks can be subjectedto temperature regulation manually, a user can drink hot drinks after exercising, and body health is facilitated.