He has worked as Cinematographer in doordarshan for 16 years. Operation Bluestar in Golden Temple of Amritsar was picturised by Alagappan. He entered into film industry in Tamil film ‘Enpriyam’ in 1982. His entered into Malayalam film through Sunderdas’s ‘Sammanam’ in 1997. He has worked for famous TV Serials like Naluketu, Manjukalam Mohicha Penkutti, Maranam Durbalam. He got six State Awards in Film and Television Field.