Abstract: In this work we measured the fission yields of 38 mass chains using radiochemical method as well as direct Ge(Li)-γ spectrometry. Nine fission yields are presented that is experimentally measured for the first time for the 3.0 MeV neutron-induced fission of 238U. The mass-yield curve shows that there are fine structure peaks at A = 134 and 101-103. The total yield is 198.5% under the mass-yield curve. The peak widths taken at half maximum are 16.7 and 15.5mass units and the average mass numbers are 97.5 and 139.2 for the light and heavy peak respectively. The ratio of peak to valley is 179 (99Mo/115A).