客观世界是普遍联系的，同类事物和现象有共同的属性；客观世界又是千差万别

The objective world is universally connected, and similar things and phenomena have common attributes; the objective world is extremely different, "there are no two identical green leaves in the world." This means that there are common points and differences between objective things. The method of determining the similarities and differences between things is called comparative method or comparative analysis method. Comparative analysis method is one of the commonly used analysis methods in police scientific research. Comparative analysis attempts to distinguish things through the comparison of similarities and differences, to achieve a deep understanding of each thing, and to grasp each thing. In the theoretical analysis of data, when it is necessary to achieve an understanding of something by comparing the similarities and differences of two or more things or objects, comparative analysis methods are generally used. In comparative analysis, the following points should be grasped: one is the combination of horizontal and vertical comparison; the second is to compare the similarities and differences of things; the third is to compare comparable things, not between incomparable things Comparison; the fourth is to select and formulate accurate and stable comparison standards.

The objective world is universally linked, similar things and phenomena have common attributes, the objective world is very different, "the world can not find two identical green leaves." That is to say, there are common points and differences between objective things. A method of determining the similarity and difference between things, called a comparison method or a comparative analysis method. Comparative analysis method is one of the commonly used analytical methods in police scientific research. Comparative analysis attempts to distinguish things by comparing their differences and differences, to achieve an in-depth understanding of each thing, so as to grasp each thing. In the theoretical analysis of data, comparative analysis methods are generally used when it is necessary to achieve the understanding of something by comparing the similarity of two or more things or objects. Comparative analysis should grasp the following points: First, horizontal comparison and vertical comparison combined, second, the comparison of things of the same points and differences, third, to compare the compared things, do not compare between the inextricable things, and fourth, the selection and formulation of accurate and stable comparison standards.

The objective world is generally connected, similar things and phenomena have common attributes; the objective world is different, "there are no two same green leaves in the world.". That is to say, there are similarities and differences between objective things. The method of determining the similarities and differences between things is called comparative method or comparative analysis method. Comparative analysis method is one of the common analysis methods in police science research. Comparative analysis tries to distinguish things by comparing the similarities and differences of things, so as to achieve in-depth understanding of each thing, so as to grasp each thing. In the theoretical analysis of data, when we need to compare the similarities and differences of two or more things or objects to achieve the understanding of something, we generally use the method of comparative analysis. In comparative analysis, we should grasp the following points: first, the combination of horizontal comparison and vertical comparison; second, the similarities and differences of things; third, we should compare the comparable things, not between the incomparable things; fourth, we should choose and formulate accurate and stable comparison standards.<BR>