目前临床上使用的 1ｍｌ一次性注射器及针头均有死腔存在 ,即注射器乳头及针头内在使用时有液体残留。笔者对 1ｍｌ一次性注射器及针头死腔容量 (即液体残留量 )进行了观察 ,探讨死腔对青霉素皮试液配制含量的影响 ,并提出科学的配制方法。1　材料与分组同一批号 1ｍｌ一次性注 Currently used clinically 1ml disposable syringes and needles have dead space exist, that is, the internal use of the nipple and needle syringe liquid residues. The author of 1ml disposable syringes and needle dead space capacity (that is, the amount of residual liquid) were observed to explore the dead space on penicillin skin test solution preparation content and to propose a scientific method of preparation. 1 material and group the same lot 1ml one-time note