宫颈环扎手术什么时间做好呢?陈凤林教授指出：宫颈环扎手术时机非妊娠期手术选择月经干净后3-7天。When does cervix ring tie operation do well? Professor Chenfenglin pointed out: The timing of cervix ring surgery is not pregnancy surgery choice 3 to 7 days after menstruation is clean.

　　妊娠期手术选择。Choice of pregnancy surgery.

　　1.宫颈功能不全：有习惯性流产、早产病史，孕前已确诊宫颈功能不全者，一般在孕16～20周施行环扎术，或在以往流产时间提前一周施行手术。

　　1. Cervical function is incomplete: There is a history of habitual abortion and premature birth. Those who have been diagnosed with cervical dysfunction before conception are generally given a ring surgery between 16 and 20 weeks of pregnancy, or an operation one week in advance of the previous abortion time.

　　2.一般于孕25～34周发生无痛性阴道流血，经超声检查确诊为中央性前置胎盘，可考虑施行宫颈环扎术。

　　2. Generally, painless vaginal bleeding occurs at 25 to 34 weeks of pregnancy. After ultrasound examination, it is diagnosed as a central anterior placenta, and cervical cervicular ligation can be considered.