Background: Many scholars at home and abroad had engaged in the research of underground radon in the earthquake. Purpose: The aim is to discuss the relationship between axial stress and radon precipitation quantity. Methods: Aim at red sandstone specimen under different axial stress

this paper made the axial strain experiment and the radon precipitation quantity measurement experiment. Results: The results show that the Burgers creep model can represent the creep characteristics such as instantaneous loading strain

decay creep and steady creep; according to the results of instantaneous radon measurement method and cumulative radon measurement method

the correlation coefficient between the axial stress and red sandstone radon precipitation quantity is up to 0.97 (p<0.05); the experimental result confirmed that the axial stress has a negative correlation with radon precipitation quantity. Conclusion: This result provides a strong evidence for the rock radon precipitation reduces under stress in the process of earthquake preparation

it has a positive guiding significance for using radon to forecast the earthquake. Abstract