The left hand shaking with heavy objects may be caused by physiological factors, such as mental tension, or may be caused by pathologic factors, such as hyperthyroidism, Parkinson’s disease, etc. 1. Physiological factors: if the patient is in a state of emotional excitement, mental tension, it is easy to cause muscle tightness, activity is limited, then the left hand may cause hand tremor with heavy objects. It is also possible that the strength is not enough to hold heavy objects with a shaky hand. 2. Hyperthyroidism: due to excessive secretion of thyroid hormone in the patient’s body, resulting in sympathetic excitation, hypermetabolism appears, it is easy to cause the left hand to hold heavy objects shake. 3. Parkinson’s disease: due to the degeneration of the substantia nigra in the brain of patients with Parkinson’s disease, triggering a stationary tremor, which leads to the left hand to hold heavy objects shake. If the patient appeared left hand holding heavy objects shaking, it is recommended that the patient go to the hospital in a timely manner, improve the thyroid function, head CT and other tests, to clarify the cause of the disease, and comply with the doctor’s instructions for treatment.