The present article is an attempt to apply the Theory of Conceptual Metaphor to the ana-lysis of idiomatic phraseological units of the Romanian language. We have already established that most of the idioms reflect in their form some cultural and historical information that is known to the native bearers of the Romanian language. At the same time, we believe that there is a group of idioms that can be analysed taking into account the conceptual metaphor that is of a universal nature. To this end, we shall make a distinction between the individual and conceptual metaphors and will apply the conceptual metaphor “mind is a container” to the Romanian phraseology, providing a linguocultural analysis of the idiom.