造词是一种逻辑思维活动，也是一种语言活动，新增词语也遵循这样的思维和语言方式。其中方言词的造词理据研究作为新兴起的研究方向，蕴含着更为丰富的文化民俗。北京方言作为现代汉语的基础方言，对普通话影响更大，有更多机会进入普通话。因此本文以《现代汉语词典（第3版）》新增词语中的“猫儿腻”为例，探寻其造词理据。

Word making is a logical thinking activity as well as a language activity. New words also follow such thinking and language mode. As a newly emerging research direction, the research on the motivation of Chinese words contains more abundant cultural folk customs. As the basic dialect of modern Chinese, Beijing dialect has a greater influence on Mandarin and has more opportunities to enter mandarin. Therefore, this paper takes "cat and greasy" in the new words in modern Chinese Dictionary (3rd Edition) as an example to explore the motivation of their word formation.