緊急避孕（），指無保護措施的性行為或避孕失敗後的幾小時至幾日內，婦女防止非自願性妊娠的發生，而採取的補救避孕法，其中包括放置宮內節育器和口服緊急避孕藥。

定义
适应症

避孕失敗，包括安全套破裂、滑脫；未能做到體外排精；計算錯誤安全期；漏服用短期避孕藥；宮內節育器滑脫。

未使用任何避孕方法進行性行為。

遭到強制性交。

方法

宫内节育器：在无保护性生活后5日（120小时）之内放入，有效率达95%以上。

紧急避孕药种类及用法：主要有雌孕激素复方制剂，单孕激素制剂及抗孕激素制剂3大类。

参考书目
*

外部連結

• [http://ec.princeton.edu The Emergency Contraception Website (not-2-late.com)] by the Office of Population Research at Princeton University and the Association of Reproductive Health Professionals. Information for women who need emergency contraception now.
• [http://www.plannedparenthood.org/health-topics/emergency-contraception-morning-after-pill-4363.asp Planned Parenthood web site.] Educational web site with information for women who need emergency contraception now.
• [http://www.cecinfo.org/ International Consortium for Emergency Contraception] Policy-oriented web site directed at professionals.
• [https://web.archive.org/web/20080910203455/http://www.acsa-caah.ca/Portals/0/Member/PDF/en/documents/emergcontra.pdf Emergency contraception] by the Adolescent Medicine Committee, Canadian Pediatric Society (CPS), Paediatrics and Child Health ACSA-CAAH
• [http://purl.fdlp.gov/GPO/gpo41799 Use of Emergency Contraception Among Women Aged 15-44, United States, 2006-2010] National Center for Health Statistics