The invention discloses a herbal tea bag and a making method thereof. The herbal tea bag is made of natural plants. In the first embodiment, the making method comprises the steps of weaving the natural plants into square braided fabric, then taking two pieces of braided fabric, and sewing the four sides of the two pieces of braided fabric in a stretchable mode by means of a thin thread so that the two pieces of braided fabric can be buckled together to form the herbal tea bag. In the second embodiment, the making method comprises the steps of weaving the natural plants into round or oval braided fabric, then taking one piece of braided fabric, and sewing the edges of the braided fabric in a stretchable mode by means of a thin thread so that the braided fabric can be contracted to form the herbal tea bag. In the third embodiment, the making method comprises the steps of weaving the natural plants into isosceles triangle-shaped or fan-shaped braided fabric, taking one piece of braided fabric, sewing the two sides, in the same length, of the braided fabric in a stretchable mode by means of a thin thread, and then sewing the two sides with the other side by means of a thin thread in a stretchable mode so that a stretchable sealed structure can be formed. By means of the natural plant material, the natural quality of tea is guaranteed, and the herbal tea bag can be repeatedly used and has the advantages of being safe, free of poison and environmentally friendly.