Abstract: The free radical in vitro scavenging effects of 5 kinds healthcare medicines were studied.Their scavenging effects to 1,1-Diphenyl-2-picryl －h ydrazyl (DPPH·) had a quantitative relationship ,the larger the concentration,the stronger the scavenging effects.Scavenging effects to hydroxyl radical （·OH） had the best concentration.The scavenging effects would be weakened without it.Scavenging effects to superoxide radical ()were defferent with each other.The free radical scavenging effects might be of the basis of molecular pharmacology.

Key words: Healthcare medicine Free radical Scavenging effect