The effect of x on microwave dielectric properties of the $(1-x)Mg_4Ta_2O_9-x(TiO_2,;CaTiO_3,;SrTiO_3)$ ceramics for microwave components were investigated. All spcecimens prepared by the conventional mixed oxied method and sintered at $1450^{circ}C$. Microwave dielectric properties of the $(1-x)Mg_4Ta_2O_9-xTiO_2$ ceramics were influenced by $MgTi_2O_5$ phase. Also the microwave dielectric properties of the $(1-x)Mg_4Ta_2O_9-x(TiO_2,;CaTiO_3,;SrTiO_3)$ ceramics were dominated with an addition of $CaTiO_3;and;SrTiO_3$. The dielectric constant $(varepsilon_r)$, quality factor $(Q{ imes}f_r)$ and temperature coefficient of the resonant frequency $(TCRF,; au_f)$ of the $(1-x)Mg_4Ta_2O_9-x(TiO_2,;CaTiO_3,;SrTiO_3)$ ceramics were $12.96sim70.98,;5,132sim186,410GHZ$ and $-35.82sim+75.96ppm/^{circ}C$, respectively, and depend on x and addition materials.