Sample preparation for grinding and mainly used for grinding raw materials. The working mode is vibration grinding. The material is put in a bowl, which contains a crushing ring and a breaker hammer. The bowl forms vibration and grinding functions during high-speed rotation. The material is crushed and grinded by the crushing ring and breaker hammer, and it will only take 0.5-2 minutes to grind the mateiral into 80-200 mesh (0.175-0.074mm) micro-powder sample, which can be used directly for testing.