The present invention provides a temperature display label, a food packaging container and a method of manufacturing a food packaging container which can appropriately display the temperature of the measured object during the use of electromagnetic wave conditioning machine. The temperature display label of the present invention is for displaying a temperature of a measured object heated by an electromagnetic wave conditioning machine, having: a temperature display layer whose color changes according to temperature and a first conductor layer disposed on one side of the temperature display layer and having a plurality of openings.本發明提供一種在電磁波調理機器使用中,可適當地顯示被測溫對象之溫度的溫度顯示標籤、食品用包裝容器及食品用包裝容器之製造方法。本發明之溫度顯示標籤是用來顯示以電磁波調理機器加熱的被測溫對象之溫度,具有:顏色會依溫度而變化的溫度顯示層;以及配置在溫度顯示層的一面,且設有複數個開口的第一導體層。10‧‧‧溫度顯示標籤20‧‧‧導體層21‧‧‧開口21L‧‧‧對角線21X‧‧‧中心27‧‧‧第一帶狀部28‧‧‧第二帶狀部31‧‧‧溫度顯示層e1‧‧‧長度e2‧‧‧長度f1‧‧‧長度f2‧‧‧長度g1‧‧‧長度g2‧‧‧長度p1‧‧‧長度p2‧‧‧長度t1‧‧‧長度t2‧‧‧長度Dx‧‧‧第一方向Dy‧‧‧第二方向
