A
urinary system calculus journey explanation model effectively solves the problem of inconvenient use of existing
urinary system calculus journey explanation devices; including a support plate, the left and right sides of the front end of the support plate are respectively provided with a
renal pelvis model, the front end of the support plate is provided with a bladder model located below the two
renal pelvis models, the left and right sides of the front end of the support plate are respectively provided with
ureter models located between the
renal pelvis models and the bladder model, the upper end of the
ureter model is communicated with the corresponding side of the renal
pelvis model and the lower end is communicated with the bladder model, the lower end of the bladder model is communicated with a
urethra model, a Y-shaped moving groove is opened on the support plate, the renal
pelvis model, the
ureter model, the bladder model and the
urethra model are provided with a communication groove communicated with the moving groove, the left and right sides of the moving groove are respectively provided with front and rear axial sliding columns, and the front end of the sliding column is detachably connected with a calculus model; this structure is simple, novel in design, convenient to use and high in practicality.