In this study the calcined condition and characteristic of Cu-Ni-Zn ferrite powder were investigated. The Cu-Ni-Zn ferrite powder has been synthesized by the thermal decomposition of the organic acid salt. This process did not require a strict pH control and provided the uniform composition and fine powder with about 0.3 $mu extrm{m}$. The XRD diffraction pattern of this powder showed about 50% spinel phase. The optimum calcination was found to be done at $700^{circ}C$ for one hour. After the calcination, the amount of spinel increased to 90%. The distribution of the particle size showed bimodal peaks, one was about 0.5 $mu extrm{m}$ and the other was about 20 $mu extrm{m}$. The large particles of 20 $mu extrm{m}$ were the agglomeration of fine Particles. The mean Particle size of the powder was about 0.4 $mu extrm{m}$. The powder was compacted under 100 MPa pressure and sintered at 1100~ $1250^{circ}C$ for one hour in air. The density of ferrites specimen was a function of the sintering temperature. The higher the temperature, the denser the ferrite. The maximum relative density of the sintered ferrite was about 93% at $1250^{circ}C$. The grain size of sintered specimen at $1200^{circ}C$ was 5 $mu extrm{m}$ and homogeneous.