Abstract: ObjectiveTo investigates the heat conduction characteristic of three kinds of needle in human soft tissue chronic injury and to research the mechanisms of silver needle therapy.MethodsIron needle and silver needle in different delimiters were used in 23 patients with low back pain and their skin temperature were tested.ResultsThe change of temperature in two kinds of iron needle was not significantly different(P>0.01),but that of the silver needle significantly rised(P>0.01).ConclusionThe heat conduction characteristic of silver in human soft tissue was better than that of iron needle. The better heat conduction characteristic of silver in human soft tissue maybe related to the better therapy effects.

Key words: silver needle, heating therapy, low back pain