Taking experiments on single-hole blasting crater as main but two-hole blasting crater as supplement, the experiment on large holespacing blasting crater for large-diameter longhole mining in Anqing copper mine provided a basis for the hole pattern parameters design of large-diameter longhole blasting, and a selected range of holespacing-to-optimal blasting crater radius ratio (value K). This paper presents a new thought train on the futural blasting crater experiment, which is of better practicality and can meet the requirements of mining production satisfactorily.