The invention relates to the field of temperature measurement, in particular to a glass tube material for a glass thermometer and a production method thereof. The glass tube material comprises a tube body, wherein tube body has a triangular radial cross section; a capillary tube is arranged in the center of the tube body in the length direction of the glass tube material; a first reflection glazing strip extending in the length direction of the tube body is arranged in the tube body in a position near to the first side wall of the tube body; a blue glazing strip extending in the length direction of the tube body is arranged in the tube body in a position near to the second side wall of the tube body; and one side of the blue glazing strip, far away from the capillary tube, is connected with a second reflection glazing strip extending in the length direction of the tube body. According to the invention, the first reflection glazing strip is arranged on the first side wall, and besides, the blue glazing strip and the second reflection glazing strip are arranged on the second side wall, so that the color of a temperature-sensing metal liquid column can be rendered as blue through the reflection and refraction of light, and the range of visual angles of the temperature-sensing metal liquid column is enlarged. Therefore, a user can easily observe the temperature-sensing metal liquid column.