Knee pain in pregnant women is commonly caused by localized strain and calcium deficiency, which can be relieved by rest, physiotherapy and calcium supplementation according to different causes. 1. Localized strain: As the number of weeks of pregnancy increases, the weight of pregnant women increases, and the body load also increases gradually, when walking for a long time, it can lead to localized knee strain, so it is recommended to take proper rest, and can carry out localized hot packs or acupuncture and other physiotherapy to relieve the symptoms. 2. Calcium deficiency: when a pregnant woman is deficient in calcium, it can also lead to pain in the knee area, so you can supplement calcium tablets under the guidance of the doctor or supplement food containing more calcium, etc. for treatment, but also with local physical therapy to relieve pain. Pregnant women with persistent unrelieved knee pain are advised to go to the hospital in time to avoid delaying the condition.