1, depending on the fund category. If you just want to invest in bonds, you can choose pure debt funds directly, and you don't have to choose other miscellaneous varieties.

2. Look at the fund company. When choosing a debt base, we can see whether the fund company's team investment experience is rich, how the fund performance is, and how the fund company's risk control system is. For this, we can directly choose well-known large fund companies, or choose fund companies with banking background. Such companies have great advantages in investing in the bond market.

3. Look at the fund manager. Bond funds mostly rely on fund managers to choose bonds. In many cases, the investment ability of fund managers directly determines the income performance of bond funds, so it is necessary to examine the past management experience and performance of fund managers.

4. Look at the size and performance of the fund. Performance is an important indicator to judge a debt base, and we can query it through the third-party sales platform. When looking at the historical performance, we should pay attention to the performance in different time periods.