[The creation of laosun yutie plaster and safety experiment]

To create an externally-applied TCD plaster (Laosun Yutie plaster) for the lumbar muscle strain (LMS).

(1) The raw material such as angelica, safflower, frankincense, myrrh, clove and so on were turned into solid TCD plaster by a serial of modern treatment technology-distillation, extraction, condense, dehydration. Meanwhile, the naphtha from the distillation process and borneol were dissolved into ethanol solution and the dilution was thus made; (2) The solid TCD plaster and the dilution from the aboved-mentioned process were put together to form the TCD plaster and the corresponding safety experiments were applied to rabits' skin.

The experimental results showed that it is neither of urgent toxicity, stimulary function, nor of allergy-inducing response.

The laosun Yutie plaster was a newly externally-applied TCD plaster which could be used safely and handily.