It is not normal to have light green postnatal discharge, under normal circumstances, the discharge is bright red after giving birth to a child, with the passage of time the amount of bleeding will gradually decrease, showing light red, and after half a month it will turn into brown, within 42 days after giving birth to a child, the discharge will be completely clean, and it is best to regularly ultrasound examination to see whether the discharge is completely clean. If the discharge becomes light green, consider intrauterine infection, intrauterine infection is prone to purulent discharge resulting in light green discharge, consider that it is caused by bacterial infection, it is best to timely examination of the discharge, under the guidance of the doctor reasonable use of penicillin and other drugs for treatment. You can also carry out bacterial culture, drug sensitivity test, etc., choose sensitive antibiotic treatment, which can promote the recovery of the condition. After the birth, pay attention to hygiene, it is best to eat more high-protein food, enhance the body’s resistance, pay attention to not premature coitus, easy to aggravate the infection.