OBJECTIVE: To design a combined dynamic inhalation device for testing the toxicity induced by moxa smoking.METHODS: The new apparatus (Patent No.201120101911.5) includes air renewal and recycling systems, a gas generating device, a gas control unit, and a device to measure and control temperature and humidity. Sprague-dawley rats were tested for acute and sub-chronic toxicity after exposure to moxa-burning smoke.RESULTS: We found an LC_(50) of 1.2 × 10~4 mg/m~3 in the acute toxicity assays. In sub-chronic toxicity tests the organ coefficients ...