诊断学是研究诊断疾病的有关理论与知识、原则与规律、技能与方法的一门综合性临床医学学科。对于临床医师来说，持续不断地研究、学习诊断学的理论知识，正确理解诊断学的内涵，掌握、应用诊断学的技能与方法是非常重要的。本文对诊断学的内容、任务及发展方向进行论述。

Diagnostics is the study of diagnosis related theory and knowledge , principles and rules, skills and methods . It's a clinical medicine professional discipline. It is very important for clinical doctors to research and study of theoretical knowledge of diagnostics incessantly, understand correctly the connotation of diagnostics, master and use the skills and methods of diagnostics . In this article, the content, task , and developmental direction of the diagnostics are discussed.