否定之否定规律是思维运动的普遍规律。恩格斯指出:否定之否定规律是“一个极其普遍的,因而极其广泛地起作用的,重要的自然、历史和思维的发展规律”。在临床思维活动中,也始终贯穿着这个规律。也可以说,否定之否定规律是临床思维活动的核心部分。运用得当,可以减少误诊和延误诊断。任何临床诊断的确立,都经历着从肯定到否定的否定过程。特别是对于某些比较 The negative law of negation is a universal law of thought movement. Engels pointed out that the negative law of negation is “an extremely universal and therefore extremely widespread law of development that plays an important role in the development of nature, history and thinking.” In the clinical thinking activities, but also always runs through this law. It can also be said that the negative law of negation is a core part of clinical thinking activities. Proper use can reduce misdiagnosis and delay diagnosis. The establishment of any clinical diagnosis, have experienced from negative to positive affirmation process. Especially for some comparisons