Based on materialist dialectics, both`time and space have the duality, namely absoluteness and relativity. If absolute time and absolute space cannot exist, then relative time and relative space cannot exist too; vice versa. However, they aren’t equal. Absolute time and absolute space are more important, because they are the reference systems of relative time and relative space respectively. In addition, the absolute space is flat, while the relative space may be flat also may be curving. As for the dimensions of time and space, it is an extremely complicated question, we need to discuss the complicated time and the complicated space. The absolute space is three-dimensional, the absolute time is one-dimensional that is formed by the three-dimensional absolute time. For the relative space, it may have the multi-dimensional space, fractal dimensional space, plural dimensional space, variable dimensional space. For the relative time, it may have the multi-dimensional time, fractal dimensional time, plural dimensional time, variable dimensional time too, they are corresponding to the relative spaces. In other words, the relationship between space and time is the one by one corresponding relations. It is different to the general viewpoint that space is three-dimensional and time is one-dimensional, according to the viewpoints of self-similarity and similarity of fractal theory, three-dimensional time is derived. With the Lorentz transformation of Relativity, this paper presents the special form of three-dimensional time for a special case, which is also written as the form of variable dimension fractal. The examples given in this paper show that to establish the frames of multi-dimensional time, multi-dimensional space and the like, not only are possible but also necessary in some cases.