Ball-crating micro-scale abrasion technique has been used to determine the specific wear rates of coating and substrate by only one set of tests done with the coated surface. It can also be used to test wear performance of bulk materials. Some micro-scale abrasive wear problems about soft bulk materials were investigated with multifunctional micro-wear tester by self-development. And it was compared with Ni60B coating and TiN coating having higher hardness. The formation and evolution of ridges of the abrasion scar on soft material surfaces have been studied. The formation mechanism of ridges was discussed and the influencing factors on the ridge formation were analyzed. Recommendations were made for the optimum test conditions for micro-scale abrasive wear investigation of soft materials.