Abstract:The concepts of disturbing load and disturbing rheology of rocks are put forward on the basis of real production processes and self-developed disturbing rheological instruments with ordinary triaxial box and disturbing load device are simply introduced. Using MTS and the self-developed disturbing rheological instrument with ordinary triaxial box and disturbing load devices,tests of rock rheology under compression and compression rheology under disturbing loads as well as tensile rheolegy under tensile stresses of two typical rocks(red sandstone and soft mudstone) are carried out. Through analyzing the data of rheological tests,some important conclusions are drawn as follows:(1) disturbing rheological strain of rock is much greater than the instantaneous strain and rheological strain of rock under the same stress;(2) each disturbing load can always cause a mutation of strain and the mutation of strain is in direct ratio to static stress s as well as disturbing stress Δs;and (3) for each rock,there is a sensitive range of the static stress s and disturbing stress Δs,etc.. Through analyzing the data of tests,a rheological constitutive equation as a function of disturbing load and stress as well as time is established;and the constitutive equations are proven with test data. Moreover,the sensitive range of static stress and disturbing stress to produce disturbing rheology is also studied. The studies of rock disturbing rheological test and disturbing rheological theory may extend the content of the theory for rock rheology and support design of soft rocks.