The invention belongs to the technical field of 
geotechnical engineering, and relates to a three-dimensional intermittent 
cut-through crack production apparatus and method of a cuboid rock 
test sample. The three-dimensional intermittent 
cut-through crack production apparatus comprises a stander, and an 
electric wire saw 
assembly, a three-dimensional moving 
assembly, a 
test sample fixing 
assembly and a crack width control assembly which are arranged on the stander. By adopting the three-dimensional moving assembly and the 
test sample fixing assembly, the multi-
azimuth three-dimensional adjustment of the real rock test sample can be realized, and the production requirement of the 
cut-through crack can be met; meanwhile, the production of different intermittent prefabricated cracks of different dip angles and different widths can be completed by virtue of the cooperation of the 
electric wire saw assembly and the crack width control assembly; meanwhile, the problem of the manual saw 
wire cutting that the flatness and smoothness are insufficient and the crack difference of different samples is great can be effectively solved by virtue of the crack width control assembly, a test result can be maximally optimized, the accuracy of the test result can be guaranteed, and the 
cracking rule of the rock can be actually reflected.