宫颈内口松弛通常情况下出现这样症状的一般是从妊娠第4～5个月开始容易松弛，当出现这种症状的话就应该及时治疗，避免胎胞落入阴道内，从而导致破水而流产的发生。

　　The relaxation of the cervix usually occurs from the 4th to 5th month of pregnancy. When this symptom occurs, it should be treated in time to prevent the fetal cells from falling into the vagina, resulting in water breakage. miscarriages occurs.