In the recent years, the broodstock of Litopenaeus vannamei had been cultured in thepond in Taiwan. Due to the absence of disease prevention during the rearing procedureof stockbrood of shrimps, they were usually virus-carrier such as WSSV, TSV andIHHNV. They have a high mortality rate during the eyestalk ablation to inducematuration and spawning and even to the extent that the shrimp larvae were viruscarrier.Rearing these shrimp larvae often leads to high failure rate. Our divisionimported the SPF broodstock of Litopenaeus vannamei to propagate and culture. In2002, we have produced an average of 190 thousand eggs per shrimp for the F2broodstock and were higher than that of F0 and F1 broodstocks having an average of130 thousand per shrimp. The current problems needed to be resolved are: 1) toincrease the mating rate, 2) to select the SPR strain and 3) to select the fast-growthstrain.