Early morning calf soreness has more reasons, may be related to excessive exercise, lower extremity venous thrombosis, osteoarthritis and so on. 1. Excessive exercise: may be the previous day’s work is too tired or long walking, caused by the accumulation of lactic acid gastrocnemius muscle, in the morning when the calf soreness and swelling 2. Lower extremity venous thrombosis: after the formation of blood clots in the lower extremity blood vessels, venous reflux is affected, resulting in blood pooling in the legs, there will also be the phenomenon of early calf soreness. 3. Osteoarthritis: cause blood circulation obstacles in the knee joint area, resulting in joint pain and joint stiffness in the weight-bearing joints, causing early morning soreness and pain. After excluding the physiological causes of early calf soreness, it is recommended to consult a doctor in time, follow the doctor’s instructions for further examination, with the help of the doctor to clarify the causes, and targeted treatment or treatment.