It is possible that the source of profit is not the profit of the main business, but the accidental situation of relying on other business income or investment income, which is unsustainable. For example, when the stock market is good, many enterprises use funds to buy stocks, and the income is very high, but this is not the profit brought by the daily operation of the enterprise, and does not represent the profitability of the core business of the enterprise.

Of course, the specific situation needs specific analysis, and it is necessary to understand the specific situation of the enterprise in order to have a more detailed analysis.