The invention relates to an injection inducer device for use with a conventional injection syringe prefilled with a liquid medicament or preloaded with a soft capsule containing a liquid medicament. The device includes a seal preloaded in a front adapter end of the injection at position close to an injection opening of the adapter end and formed with a recessed guide groove. The device further includes a removable needle mounted at its front end with an adaptive cover, so that the removable needle can penetrate through the seal along the guide groove to enter a storage chamber of the injection syringe. The seal has a length in the longitudinal direction greater than the bevel length of the removable needle. The invention constitutes a substitution for the conventional medication bottles by virtue of the advantages of high portability, light weight, low frangibility, and high endurance for long distance transport.