在对从北部湾捕获海鱼的异尖科(Anisakidae)幼线虫感染状况进行初步调查的基础上,作了形态分类学研究。共检海鱼29种,134只标本,其中简单异尖线虫3期幼虫的感染率达30.6％,且大部分阳性鱼种的感染率在50％以上。此外尚检获宫脂线虫(Hysterothylacium)属3期幼虫2型:C_1型和C_5型,其中C_1型为初次报告。另检出伪新地蛔线虫(Pseudoterranova)属幼虫1型。 Based on the preliminary investigation of the infection status of Anisakidae larvae caught from the Beibu Gulf, morphological taxonomy was conducted. A total of 29 species and 134 specimens of marine fish were examined. Among them, the infection rate of 3rd instar larvae of ANA was 30.6%, and the infection rate of most of the positive species was over 50%. In addition, the third stage larvae of Hysterothylacium genus Type 2: type C_1 and type C_5 were also detected, of which Type C_1 was the first report. Another Pseudoterranova larvae type 1 was detected.