The invention relates to a provided germanium silicate based elastic stress light-emitting material and a preparation method thereof. The light-emitting material uses rare earth elements as an activating agent, the chemical construction formula of the light-emitting material is Zn2-xSiyGe1-yRxO4, wherein x is greater than or equal to 0 and smaller than or equal to 0.10, and y is greater than or equal to 0 and smaller than 1; R represents elements of the activating agent or sensitizing agent, which are selected from one or the combination of Mn, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Er and Yb; and x and y represent molar contents respectively. A stress sensor based on the stress light-emitting material has extremely wide application prospect in all fields of production and life for the stress measurement and monitoring of artificial skin, gas storage devices, personal identification, mechanical parts, building facilities and the like.