The invention discloses a disassembly-type multifunctional detection device for mechanical properties. A front end rack, a connection rack and a rear end rack can be assembled in site according to thelength of a to-be-detected material or workpiece or structure, a simple detection platform is formed, the material or workpiece or structure is arranged between a wall pulley hanging plate and a detection fitting hanging point, a wall pulley applies force with target values of different forms to the wall pulley hanging plate, whether or not the to-be-detected material or workpiece or structure can resist or bear the force of the form is detected, and accordingly the material or workpiece or structure is simply detected.