The invention discloses a height-difference-adjustable microscope combined object table comprising a sleeve which is internally provided with a fixed sample table and a moving sample table. The sleeve and the fixed sample table are connected via a screw. The sleeve and the moving sampling table are connected via threads. Internal threads are formed are on the internal wall of the sleeve, a counter hole is formed at the bottom part, an internal boss is formed on the internal bottom surface, and a groove is formed in the middle part of the internal boss. The fixed sampling table is formed by a semi-cylindrical upper part and a cylindrical lower part. The lower part is downward to form a boss, an installing screw hole is formed in the middle of the boss, and multiple sample grooves are formed on the upper part. The moving sample table is cylindrical, external threads are formed at the external circumferential surface, flanges are formed at the upper end and a special-shaped hole is formed in the middle. The height-difference-adjustable microscope combined object table is simple in structure and convenient to operate, and multiple samples which are relatively high in height difference can be detected simultaneously so that problems that the samples are repeatedly reloaded and the lens of a microscope is bumped due to height difference of the samples can be avoided, the number of the samples of single time of detection can be effectively increased and detection efficiency can be enhanced.