In order to meet the demand of the scraper loader the big cross section slant hole high-speed driving tunneling speed, the solve the contradiction of the loading speed not to be able to satisfy the tunneling speed, this article in allusion to the characteristic of our country northwest area mine pit, pays attention studies and the transformation loads the machinery a scraper loader. In this paper, take the scraper loader’s productivity and the steel wire’s traction as the datum, through the massive computations, the inference and the proof, basically completed the scraper loader the reduction gear , the word drum , the spatial regulation drum and so on the major component design work . Work drum and the spatial regulation drum transmission mainly .Uses the planet gear to complete, which has simple operation , nimbly , adjusting simple, fewer accident little maintain work, at the same time , on the basic of shaping the absorption the product production and experience of using , design and select the rake to fight part and so on charging machine trolley , operating mechanism , brake mechanism , rabble blade and material trough , subsequently , complete the design work of the scraper loader , in addition , the author also summarized operating procedure of the scraper loader and the attentions . Which must be paid when using and maintaining the scraper loader .