1, brand awareness: to join a host brand, we must first look at brand awareness, which can be measured from media reports, online search volume and social media discussions.

2. Marketing strategy: It is very important to understand the brand's marketing strategy. It depends on the brand's marketing channels, involving e-commerce, physical stores, TV shopping, social media and so on. The offline activities of the brand are also very important, which can increase the exposure and influence.

3. Product quality: Product quality is an important reference factor, which depends on the brand's product quality and whether they are competitive.

4. Brand reputation: Brand reputation is also an important reference factor to judge whether joining is worthwhile. It depends on whether the brand has a good reputation and whether they have popular products and services.

5. Joining conditions: Joining conditions are also an important reference factor. It is necessary to know the details of the franchise fee, franchise period and policy of the hosting brand, so as to determine whether it is cost-effective to join the brand.