Though currently researches on grammatical metaphor theory are still thriving, its future deconstruction can be possible due to the following facts: firstly, too much unrelated or even conflicting contents have been subsumed into the scope of grammatical metaphor theory; secondly, grammatical metaphor theory has failed to offer a reasonable solution to the compatibility problem between semantics and grammar. We hold that the deconstruction of the grammatical metaphor theory can be approached from two levels: term level and theoretical level. Firstly, core terms like “grammatical metaphor” and “congruity” can be replaced by some other more accurate terms due to the theoretical problems found with them; secondly, the detailed study of the meaning level can result in the deconstruction of grammatical metaphor theory, i.e., on the one hand, the detailed study of the meaning level may challenge the existence of the so-called lexi-grammatical level; on the other hand, the detailed description or study of the dynamic meaning construction process may challenge the validity of grammatical metaphor as an explanation mechanism. In addition, the new approach to the study of grammatical metaphor theory is actually the deconstruction of the traditional grammatical metaphor theory. Approached from the perspective of theoretical development, the theoretical implication of deconstruction is multi-dimensional. On the one hand, deconstruction implies the efforts of both development and elaboration; on the other hand, deconstruction means to purge the previous theories by more advanced methodologies.