The timing of your insulin shots is largely determined by which type of insulin is being given. If you are using a short-acting insulin, you take it 15-20 minutes before your third meal. If you use long-acting insulin, because long-acting insulin is currently divided into two kinds of insulin glucagon and dexamethasone, the effect can be maintained for 24-28 hours, usually once a day at a fixed time, such as 7:00 a.m. in the morning, or 8:00 p.m. at night before going to bed. If you use fast-acting insulin analogs, such as Menthol 30, Menthol 50, Lysine 25, Lysine 50, the regularity is 5 minutes before eating can be played. So, the timing of insulin injection mainly depends on which kind of insulin is injected, and the injection time and precautions are different for different insulins.