To make a big fuss over a small matter; to be overly alarmed about something trivial.
形容对没有什么了不起的的事情过分惊讶。
宋·朱熹《答林择之》要肱把此事做一平常事看，朴实头做将去，久之自然见效，不必如此大惊小怪，起模画样也。”
When he found a tiny scratch on his car, he made a huge fuss—what a typical case of making a mountain out of a molehill.
Learn the next connected idiom: 大惊小怪 (dà jīng xiǎo guài) → 怪力乱神 (guài lì luàn shén)
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