The crazing stress and its temperature dependence of various amorphous glassy polymers were measured by three-point bending of round-notched bars, and the correlation with molecular parameters was studied. Only the factor of void formation by scission of entangled molecular chains did not correctly describe the temperature dependence of crazing stress. It was possible to describe crazing stress and its temperature dependence when the factors of both void and fibril formation were taken into consideration. Crazing stress and its temperature dependence can be represented by surface free energy, entanglement density, entanglement mesh size, bond energy and shear yield stress.