The invention discloses a memorable device for injecting insulin, belonging to the technical field of medical instrument devices. Some patients with diabetes, especially the children can not inject the insulin and are injected by others, as the needle holes are more on a belly, and are not easy to memory, if the same part of the skin is injected repeatedly in a short time, pain is added to the patent, so as to lead the skin of the patient to repair slowly to generate subcutaneous induration, thus drug absorption is influenced. The technical scheme provided by the invention is as follows: a positioning hole with a navel (1) and the two sides of a clapboard (2) outside the navel of a positioning indicating arrow (6) are respectively fixedly connected with an insulin injection positioning plate (3) which is provided with injection square holes (4); and a silica gel hole plug (5) is covered on each injection square hole. The memorable device for injecting insulin provided by the invention has the advantages that the device can be used for injecting for 12 times in one circulation, and can be used for avoiding injecting on the same part repeatedly, so as to facilitate skin tissue to quickly repair, and not to generate the subcutaneous induration, thus being beneficial for the absorption of the insulin.