对症下药

duìzhèng-xiàyào

[suit the medicine to the illness; (fig) suit the remedy to the case; prescribe the right remedy for an illness] 原指医生针对病情处方用药, 现在常用来比喻针对具体情况决定采取措施或处理办法

你要老实把原因告诉我, 我才能对症下药