The difference between tummy injections and intravenous injections usually lies in the difference in their mode of circulation and rate of absorption. 1. Circulation mode: after tummy injection, the drug is usually absorbed through the abdominal mesenteric vein and gradually enters the systemic circulation; whereas after intravenous injection, the drug will enter the blood vessels to start the systemic circulation. 2. Absorption speed: stomach injection is through the interstitial tissue, and then through the capillaries, and then into the general circulation, the absorption speed is slower; and intravenous injection is directly injected into the blood vessels, directly start the circulation, and the absorption is faster. It is recommended that patients go to the hospital for injection, and at the same time to actively cooperate with the doctor, not private medication, in the injection if there is chest tightness, shortness of breath, headache and other symptoms in a timely manner to communicate with the doctor, after the injection, patients should pay attention to a light diet, regular review.