Abstract: The uniaxial time-dependent ratcheting of continuous glass fiber reinforced polymer resin matrix composites (40%，50% glass fiber volume fractions) was experimentally observed at room temperature under the uniaxial stress-controlled cyclic loading，and the evolution features of the ratcheting of the composites presented under different cyclic loading conditions were discussed. The results show that the ratcheting occurs in the composites during the asymmetrical uniaxial stress-controlled cyclic loading (i.e.，the applied mean stress is not zero)，and the ratcheting strain increases as the applied stress amplitude and mean stress increase；however，the addition of continuous glass fibers into the polymer matrix increases the resistance of the composites to the ratcheting deformation，and the ratcheting strain produced in the cyclic loading decreases with the increase of glass fiber volume fraction；the ratcheting of the composites also presents apparent time-dependence，even at room temperature，i.e.，the ratcheting depends upon the stress loading rate and hold time at the peak stress，and the value of ratcheting strain increases apparently with the decrease of stress loading rate and increase of hold time at peak stress during the uniaxial stress-controlled cyclic loading.