Micro-/nano-metered TiC particulates dispersion strengthened 304 stainless steel (TiC-304SS strengthened steel) were prepared by in-situ reaction technology with 2% and 5% TiC (in volume fraction) respectively. The high temperature creep properties of the plain 304SS and two TiC-304SS strengthened steels were investigated. The results show that the in situ formed TiC particulates, most of which exhibited polygonal shape, were distributed uniformly in the matrix of 304 SS and are well bonded with the matrix. Moreover, TiC particulates present a significant effect on the grain refinement of the steel matrix. It reveals that being subjected to creep test by100 MPa at 700^oC for 200 h, the grains of the plain 304SS grew up evidently with elongated shape along the loading direction, in the contrary, the grain growth tendency of the TiC-304SS strengthened steels seems to be inhibited, thereby, the creep deformation was effectively reduced. The above results imply that dislocation motion in the three steels accords with dislocation climb mechanism. Besides, the values of apparent creep stress exponent and activate energy of the two TiC-304 strengthened steels are higher than that of the plain 304SS. It is proposed that the enhancement of creep performance of TiC-304SS strengthened steel may be ascribed to the enhanced threshold stress and load transfer barrier, as well as the microstructural strengthening effect.