Ayurvediya Padartha Bigyan is the branch of Ayurveda that deals with the fundamental principles and concepts of the Ayurvedic system of medicine. Here are four features of Ayurvediya Padartha Bigyan:

1. Basic principles: Ayurvediya Padartha Bigyan provides a detailed explanation of the basic principles of Ayurveda, such as the theory of Tridosha (Vata, Pitta, Kapha), the concept of Dhatu (tissue), Mala (waste), and Srotas (channels). It explains how these fundamental principles govern the human body and mind and their interactions with each other.

2. Classification of substances: The branch of Ayurvediya Padartha Bigyan provides a detailed classification of substances, including herbs, minerals, and animal products, based on their properties, tastes, and actions.

3. Pharmacology: Ayurvediya Padartha Bigyan discusses the pharmacology of various substances used in Ayurvedic medicine, including their actions, metabolism, and interactions with the body.

4. Therapeutic applications: The branch of Ayurvediya Padartha Bigyan provides guidelines on how to use various substances for therapeutic purposes, such as medicinal herbs, minerals, and animal products. It explains how these substances can be used to balance the Doshas, improve digestion, and promote overall health and well-being.