This study was conducted to determine the volume of pig slurry productinn and the characteristics from 4 swine farms. For the composition of pig slurry produced, contents of N, $P_2O_5$ and $K_2O$, were 0.13, 0.25 and 0.13% in slurry, respectively. Water pollutant concentration in slurry of swine farms, $BOD_5$, $COD_MN$, SS, T-N and T-P, was $24,047mg/{ell}$, $30,232mg/{ell}$, $36,833mg/{ell}$, $2,805mg/{ell}$, $465mg/{ell}$, respectively. The average volume of pig slurry was 6.30 ${ell}/head/day$ and 6.32 ${ell}$ in spring, 6.69 ${ell}$ in summer, 6.09 ${ell}$ in autumn, and 6.12 ${ell}$ in winter. The average moisture content of slurry was 95.8%. The composition of slurry produced by pig farms.