An injection instrument set comprising: a tubular injection instrument configured for accommodating an injection liquid, wherein the injection instrument has an injection needle which is configured to be inserted into an injection target and which is configured to inject the injection liquid into the injection target, and wherein a plurality of discharge holes, which are spirally disposed in a lengthwise direction of the injection needle, are disposed in a peripheral surface of a portion of the injection needle which is configured to be disposed in a shallow portion of the injection target, characterized by: a guide member configured to be disposed on a surface of the injection target of the injection liquid, wherein the guide member includes: a guide passage which is disposed at a predetermined angle with respect to a surface of the guide member for coming in contact with the injection target, the guide passage being configured to allow the injection needle to be inserted into the guide passage and to guide the injection needle to the surface of the injection target; an anti-slip portion disposed at a portion at which the guide member comes into contact with the surface of the injection target; and a positioning portion which is configured to come into contact with the injection instrument when the injection needle is inserted into the guide passage and which is configured to dispose, in a shallow portion of the injection target, an injection position of the injection liquid due to the injection needle. a tubular injection instrument configured for accommodating an injection liquid, wherein the injection instrument has an injection needle which is configured to be inserted into an injection target and which is configured to inject the injection liquid into the injection target, and wherein a plurality of discharge holes, which are spirally disposed in a lengthwise direction of the injection needle, are disposed in a peripheral surface of a portion of the injection needle which is configured to be disposed in a shallow portion of the injection target, characterized by: a guide member configured to be disposed on a surface of the injection target of the injection liquid, wherein the guide member includes: a guide passage which is disposed at a predetermined angle with respect to a surface of the guide member for coming in contact with the injection target, the guide passage being configured to allow the injection needle to be inserted into the guide passage and to guide the injection needle to the surface of the injection target; an anti-slip portion disposed at a portion at which the guide member comes into contact with the surface of the injection target; and a positioning portion which is configured to come into contact with the injection instrument when the injection needle is inserted into the guide passage and which is configured to dispose, in a shallow portion of the injection target, an injection position of the injection liquid due to the injection needle. a guide passage which is disposed at a predetermined angle with respect to a surface of the guide member for coming in contact with the injection target, the guide passage being configured to allow the injection needle to be inserted into the guide passage and to guide the injection needle to the surface of the injection target; an anti-slip portion disposed at a portion at which the guide member comes into contact with the surface of the injection target; and a positioning portion which is configured to come into contact with the injection instrument when the injection needle is inserted into the guide passage and which is configured to dispose, in a shallow portion of the injection target, an injection position of the injection liquid due to the injection needle.