素問(wèn)遺篇注云．用圓利針、長(zhǎng)針．未刺時(shí)．先口溫針暖而用之．又曰．先以口銜針令溫．又曰．毫針于人近體暖針至溫．又曰．著身溫之． 按口體溫針．欲針入經(jīng)穴．氣得溫而易行也．今或投針于熱湯中．亦此意耳．口溫與體溫微有不同．口溫者．針頭雖熱而柄尚寒．不若著身溫之．則針通身皆熱矣．