Abstract: In order to prepare briquette for pyrolysis at mid- low temperature,Shenmu coal which was typical low rank coal was adopted as the sample,the heavy component of coal tar and asphalt were used as binder. The effects of briquetting pressure,moisture,binder types and additive amount on cold strength and thermal strength of briquette were studied. The influence rule of binders ratio on the cold and hot strength of briquette was investigated. The results showed that,with the increase of pressure and moisture,the briquette strength increased first,then decreased. Different binders had different influences on briquette properties. The increase of coal tar and asphalt enhanced the cold and hot strengthen of briquette. When the briquette moisture was 13%,the briquetting pressure was 141 MPa,the mass fraction of coal tar and asphalt was 9% and 16% respectively,the briquette had better performance,which met the demands of mid- low temperature pyrolysis in vertical carbonization furnace.