The causes of right calf soreness include muscle strain, calcium deficiency, etc., as follows: 1, muscle strain: the most common cause of right calf soreness is the strain of the right calf muscle, such as in a large number of sports, or prolonged walking, up and down stairs, hiking and other weight-bearing exercise, can appear a large number of lactic acid accumulation in the right calf belly, at night will be manifested as calf soreness, pain. 2, calcium deficiency: calcium ions can inhibit the excitability of the neuromuscular junction, when calcium deficiency is increased neuromuscular junction excitability, often manifested as calf belly soreness and pain. Calcium deficiency: Calcium ions can inhibit the excitability of the neuromuscular junction. When calcium deficiency increases the excitability of the neuromuscular junction, it often manifests as soreness and pain in the calf, and it can also manifest as spasmodic pain in the calf, that is, calf cramps.