Objective:To study on wall-broken technology of Ganoderma lucidum and increase broken rate of G. lucidum powder. Method: According to index of moisture content and breaking hardness of G. lucidum powder

effect of embrittlement temperature

vacuum drying temperature and vacuum drying time on embrittlement conditions with different temperature and pressure were studied by L9(34) orthogonal experiment.And embrittlement ratio of prepared embrittlement sample and superfine grinding sample were compared. Result: It was found that optimum embrittlement conditions were:embrittlement temperature

vacuum drying temperature and vacuum drying time were 100 ℃

80 ℃ and 1 h

respectively.Under these conditions

the moisture content and breaking hardness were 3.0% and 3.7 kg.After embrittled and dried

G. lucidum powder was broken 50 min

broken rate of G. lucidum was up to 99.5%. Conclusion: Bbroken rate of G. lucidum could enhance by combining difference temperature and pressure embrittlement and superfine grinding technology.