This paper using the usual material such as Na2CO3,K2CO3,CaCO3,SiO2,CaF2 and so on prepared the in-situ fluorcanasite micro glass-ceramic composite by the sintering methods.It's machinable property is researched by the metallographic microscope,SEM and EDS.The results show that this material can be machined with the sharp machinable thread texture surface and with the plastic working property.And the EDS analyses the main crystal phase is K2Na4Ca6Si12O30F6 and the clear short prismatic structure with the sl...