There are many factors to consider when choosing a stone for the patio floor. There are many types of stone, including but not limited to granite, marble, sandstone, etc., each with its own unique texture, color, and texture. When choosing stone, we need to consider the overall style of the courtyard, the color matching, and the occasion of use. For example, granite has good hardness and wear resistance, and is suitable for areas with a large amount of granite; Marble, on the other hand, has a richer texture and color, making it more suitable for more decorative places. 
Secondly, the stone laying on the courtyard floor also needs to consider geological conditions, climate and other factors. In humid areas, the ground is prone to water accumulation, so you should choose non-slip and good drainage stone; And in dry areas, attention should be paid to the durability and UV resistance of the stone. In addition, the plants and soil that may be present in the courtyard can also have an impact on the laying of the stone, so it needs to be fully considered in the design. 
Finally, the process of stone laying on the courtyard floor is also very important. Different stones need to be laid with different methods, such as dry paving, wet paving, inlaying, etc. During the construction process, it is also necessary to pay attention to protecting the corners of the stone to avoid breakage. At the same time, in order to ensure the quality of laying, an experienced construction team should be selected. 
To sum up, the stone laying of the courtyard floor should take into account various factors in order to achieve the ideal effect and add a different charm to the courtyard. 