The use of plants and its secondary metabolic products as medicine could be traced as far back as the beginning of human civilization. In order, to enrich the use of herbs, a survey of medicinal plant diversity was carried out in JSA Medical College for Siddha and Research Centre campus. As a result of survey visit, a total of 188 medicinal plant species with 89 genus were identified. The aim of the study is to conserve the valuable bio resources. All these plants having enormous therapeutic uses such as antibacterial, antiviral, antidote, anti-cancer, antidiabetic etc. The medicinal plants collected are arranged by scientific name, common name, family name, plant parts used & therapeutic uses. The plants documented in this survey belong to the families such as Acanthaceae, Amaranthaceae, Apocyanaceae, Asclepiadaceae, Asteraceae, Cucurbitaceae, Euphorbiaceae, Lamiaceae, Liliaceae, Malvaceae, Fabaceae, Verbenaceae, Mimosoideae, Vitaceae, Solanaceae, Poaceae etc. The present investigation revealed that the medicinal plants still play a vital role in the primary health care of people.