中文摘要：

日晷作为中国古代的一种天文计时仪器，在明清时期得到了极大发展．十八世纪和十九世纪中国日晷研究和发展的特点是种类多样化、作图科学化和研究使用民间化，分析了这些特点产生的客观原因，认为西学的大量传入以及中国学者在此基础上汇通中西的工作是这个时期日晷发展得以兴盛的主要原因．

英文摘要：

The sundial is a timing apparatus in the ancient China and greatly developed in the Ming and Qing Dynasty. The research characteristics of the sundial in China in the 18^th and 19^th century is introduced. It includes the diversification of the kinds of sundial, the scientific construct and the popular studying and application. Its main reason for the development of the sundial is the influence of the western mathematics and astronomy as well as the lots of work for the mergence of Chinese with the western astronomy made by the Chinese researchers.