The invention aims at providing a glass fiber ultra-low temperature thermal insulation material production technology. Glass fiber cotton is used as a raw material, the self strength and a scientific ratio of the glass fiber cotton are used, a softening and reinforcing agent is added, the technological processes of disintegrating, pulping, defibering, cutting and the like are performed, strict metering is performed, sufficient stirring and scattering are performed, dehydration and forming are performed through wet processing, drying, reeling, rewinding, slitting and combining are performed, and a glass fiber ultra-low temperature thermal insulation material is obtained. The glass fiber ultra-low temperature thermal insulation material is low in product quantification, extremely good in thermal insulation effect and good in breathability and is a novel thermal insulation material of which the corresponding thickness and the corresponding strength can meet requirements.