飲鴆止渴

饮鸩止渴
yǐnzhènzhǐ
  1. lit. drinking poison in the hope of quenching one's thirst (idiom)
  2. fig. a supposed remedy that only makes matters worse

CEDICT

to do something harmful in order to seek any relief

Wiktionary

比喻求解眼前困難不顧將來大禍參見止渴

重編國語辭典

有害辦法解決眼前困難不顧嚴重後果

維基詞典

Entry Composition