Siddha medical system is the oldest documented medical system and pharmacology in the world. The medicines were prepared by the various research work done by the Siddhars on herbs, minerals and animals. In this paper an attempt is made to analyse the factors behind the preference to siddha medical service in Tirunelveli District. A sample size of 100 respondents was taken for the study. The tools such as Percentage Analysis and Factor Analysis were used for analysing the data. The objectives are to study the demographic profile of the consumers of siddha medical service and to study the factors behind the preference to siddha medical service. After analysing the collected data the researcher suggested that the help from Government for promoting awareness about siddha medicine among public is need of the hour. In siddha medical system, nursing care quality needs special attention. More number of nurses need to be appointed in every hospital. Government should provide assistance to develop siddha medicine and the number of siddha hospitals and colleges can be increased. If these things which are needed to give new life to siddha medical system is attended to once again, like the olden days with a revival siddha medical system sure to rock the medical field.

KEY WORD: SIDDHA MEDICAL SERVICE, MEDICAL SYSTEM.