Negative ion thermal insulation underware material

The utility model discloses negative-ion thermal underwear material which comprises a face fabric layer, an intermediate layer and an inner layer. The intermediate layer is connected with the face fabric layer and the inner layer by interweaving, the face fabric layer and the inner layer are fabrics woven by negative-ion fiber and natural fiber which are blended together, and the intermediate layer is negative-ion fiber. When made into garments for wearing, the negative-ion thermal underwear material of the utility model has superior performance of thermal protection and more thinness; due to the negative-ion fiber has the functions of deodorization and dispersion of the fresh air around the human body, the effect of health care is consequently achieved.