The utility model discloses a ball type guides assembly, consisting of the guides which do the relative motion. The utility model is characterized in that the contact path on which the guides do the relative motion is provided with common balls which are arranged on the tank body arranged on the edge of the corresponding guide. The ball is limited by the limiting device. The limiting device can choose limiting pins or a limiting block. The corresponding guides can be linear type guides or circular type guides. The ball type guides assembly can be assembled by two or more. For example, a tank body is arranged on the edge of the two sides of a linear type guide. The tank body is provided with balls, and the two sides of the linear type guide are matched and provided with guides which do the relative motion. The guides assembly can be arranged lengthways or transversely, and the guide assembly can also be a combined arrangement. As the technical schemes are adopted, the utility model has the advantages that the simple structure, the assembly is easy, the contacted guides can be changed from the surface contact of the guide pair like the Chinese character 'kuang' into the line contact so as to decrease friction, and the motion can continue without lubricating oil and heating, and the motion can not be influenced during heating so that the guides can keep work portably and quickly.