“一地两检”是指两国（或两地）在一地分别按各自的法律进行出入境管理的行为。《香港特别行政区基本法》第十八条、第二十二条以及第一百五十四条使得在香港进行“一地两检”具有合法性。通过梳理“广深港高铁”的背景，借鉴美加《航空境外入境检查协议》的现有经验可知，限制纳入附件三法律范围、行政机关给予多方面保障、确保司法机关管辖权良好应用等措施有助于“一地两检”的具体设计。

‘Two inspections in one place’ means different administrations of immigration are executed in the same place by both of countries (or districts) through their own laws. It is authorized through Hong Kong Basic Law that this method shall be operated in Hong Kong Special Administrative District. By exploring the background of ‘Guangshengang railway’, as well as referring to Aviation Preclearance Agreement Between the United States of America and Canada, measures such as restricting the range of mainland laws in Annex III, the HK Executive Authorities giving protections and ensuring the HK Judiciary’s jurisdiction are submitted for bettering the design of ‘two inspections in one place’.