The main features of bacterial meningitis cerebrospinal fluid are as follows: 1. When lumbar puncture is performed to determine the cerebral pressure in patients with bacterial meningitis, the cerebral pressure is relatively high, usually greater than 200 mmH2O. 2. The appearance of cerebrospinal fluid is cloudy, and severe patients can show the appearance of rice soup-like cerebrospinal fluid. 3. 4. biochemical tests, such as a significant decrease in sugar, because the normal cerebrospinal fluid sugar is about 50%-70% of blood sugar. In patients with bacterial meningitis, the sugar is significantly lower and the chloride can be reduced. 5. Bacterial cultures of the cerebrospinal fluid can be done and some patients can be found to have sensitive bacteria. So the cerebrospinal fluid characteristics of bacterial meningitis are roughly manifested as above.