利用放射免疫测定法对31例颌下淋巴结性蜂窝织炎病儿进行唾液分泌型IgA(S-IgA)测定。男14例,女17例,年龄8月～3岁。另取31例同龄健康儿童作为对照组。结果:对照组为150.45±35.70mg/L,病儿组急性期、好转期及治愈期S-IgA分别为96.59±23.87mg/L,123.45±28.56mg/L,153.42±32.89mg/L,急性期、好转期较对照组明显降低,差异有显著性意义(P<0.01),而治愈期则无显著性差异。结果表明本病病儿唾液S-IgA均明显 Thirty-one cases of submandibular lymph node cellulitis were tested for salivary secreted IgA (S-IgA) by radioimmunoassay. 14 males and 17 females, aged from August to 3 years old. Another 31 healthy children of the same age as the control group. Results: The control group was 150.45 ± 35.70mg / L. The acute phase, the transitional phase and the healing S-IgA in the control group were 96.59 ± 23.87mg / L, 123.45 ± 28.56mg / L and 153.42 ± 32.89mg / L, respectively, The improvement stage was significantly lower than that of the control group, with significant difference (P <0.01), but no significant difference was found between the two groups. The results show that children with salivary S-IgA were significant