Infectious diseases can be very much helped and treated by homeopathy. The cardinal principles of homeopathy offer a gentle and permanent way to treat infections. A subtle, single, potent and penetrating signal to stimulate the defence mechanism of body is all that which is required to treat infections. Homeopathy offers all this. In modern medicine the germs are killed but in homeopathy the germs are neutralised or killed by stimulating the soil (body's natural defence). The first is direct whereas the second one is indirect as well as natural and has a more lasting effect. In this work the emphasis has been given to deal the microbiology in light of theories of homeopathy. The philosophical section deals with the same. In the section of therapeutics different diseases and their manifesting objective symptoms have been given along with homeopathic medicine.