Abstract: There are some similarities and differences between poetics and chemistry，like the“isotope”phenomenon. The derivative changes of poetic texts are just like those of chemical isotopes（allotropism，isomerism）. In the retention/inversion of poetic quality，the“transfer”from the pastoral mode to the urban mode has occurred，which may be the positive realization of poetic meaning or the unfortunate consumption exchange of poetic nature. In the integration/divergence of experience，ancient and modern texts are compared to highlight the contest between different texts and showcase the vitality of individual texts. In the translation/flip of language，the great poetic potential of Chinese language is revealed，and the fact that classical Chinese poetry and modern poetry are two different types of poetry is also established. In the continuation/competition of poems with the same title，the essence of analyzing the performances of poems with the same title，whose number is on the rise，is to build a competitive text arena to test the comprehensive strength of poets. To sum up，over-protection of the isotopic elements of conventional texts and solidification of homogeneity will lead to a kind of poetry that is rigid，aging，inactivating，and patterned； yet， long-term indulgence in differential experiments of differentiation， anomaly，heteromorphism，and isomerism will also increase the probability of losing control.

Key words: Isotope, poetic quality, experience, translation, poems of the same title