The difference between breath alcohol and blood alcohol lies mainly in the accuracy, with blood alcohol tests being more precise than breath alcohol meters. Breath alcohol testing requires the full cooperation of the person being tested and blowing in the correct manner to measure the alcohol level, and the results of the test may be somewhat skewed. In addition, partially consumed food can cause inaccurate breath test results, and people who have not been drinking can also have excessive alcohol levels. In contrast, the blood test is more accurate and will not be affected by food or the way the breath is blown. As long as the medical staff is standardized in the blood collection process and the testing process, the results will be accurate. Drivers should not drive under the influence of alcohol and should work together to create a safe, civilized, smooth and orderly road traffic environment.