整形又称整型或整容，是指透过外科手术改变身体外观。整容通常指脸部整型，包括割双眼皮、垫下巴、隆鼻、嫩唇、造酒窝痘、种睫毛等。不少人以为矫形理解为整容，但两者实属不同。整容并非身体上的缺陷或伤残，是当事人因自己个人喜好或其他非医疗上的原因，以外科手术改变自己的外观，手术其实是没有必要，而且外观的看法是很主观的，就算把多位明星最优美的部位，组合再一起也不见得好看，每个人喜欢的类型都不同，这是没有一定的。矫形则是因为疾病、后天因素或意外导致永久的身体缺陷或伤残，可透过以外科手术补救或矫正，而这类手术通常是有需要或必须的。

Plastic surgery is defined as a surgical specialty dedicated to reconstruction of facial and body defects due to birth disorders, trauma, burns, and disease. Plastic surgery is intended to correct dysfunctional areas of the body and is reconstructive in nature. Though cosmetic or aesthetic surgery is the most well known kind of plastic surgery, plastic surgery itself is not necessarily considered cosmetic and includes many types of reconstructive surgery, craniofacial surgery, hand surgery, microsurgery, and the treatment of burns.