First, fix the quantity and business scale of infringing goods found at the evidence collection site. Obtaining evidence for many times in the same place, if the existing evidence proves that there are many infringing goods and the business scale is large, and the multiple evidence collection is enough to prove that the operator continues to sell infringing goods, he can get more compensation;

The second is to fix the business information of the operator to avoid the litigation efficiency being affected by the subject of the party or other procedural problems;

The third is to fix the defendant's website, publicity materials or materials left in relevant departments, such as the defendant's public declaration and submission of relevant departments' business scope, sales scale, profits and other data, which can be used as preliminary evidence of the claim;

Fourth, actively trace the source of infringing goods, stop the infringement from the source, and may get more compensation.