In order to obtain the high purity $eta$-SiC powder that possesses the excellent sinterability and is close to the spherical shape, the carbon black was mixed into the composition of Si(OC2H5)4-H2O-NH3-C2H5OH which the monodispersed spherical fine particles is formed the hydrolysis of Ethylsilicate and the mixture was carbonized under an argon atmosphere. Particle shpae, size and the yield of $eta$-SiC powder were investigated according to the molar ratio of carbon/alkoxide and variations of reaction temperature and reaction time. The results of this study are as follow ; 1) The yield of $eta$-SiC gained from the reaction for one hour at 150$0^{circ}C$ almost got near 100% and the particle size of $eta$-SiC from the reaction for 15 hrs at 150$0^{circ}C$ was 0.2${mu}{ extrm}{m}$ on the average and close to the spherical shape agglomerate state. 2) When the molar ratio carbon/alkoxide is over 3.1 and the reaction occurs at 145$0^{circ}C$ for 5hrs, the carbon content has not an effect on the kind of crystal of product.