Objective. To systematically evaluate the effect of nursing intervention on children with type 2 diabetes. Methods. The randomized controlled trials (RCTs) on nursing intervention in children with type 2 diabetes in CNKI, VIP, WanFang, Chinese Biomedical Database (CBM), PubMed, The Cochrane Library, Embase, and Science were searched by the computer until July 2022. Two evaluators reviewed the articles, selected the information, and assessed their quality according to the inclusion criteria and exclusion criteria and then carried out meta-analysis with RevMan 5.3. Results. A total of 5 RCT studies were kept, including 319 patients with type 2 diabetes (≤21 years old), where 162 patients were in the nursing group and 157 patients were in the control group. Meta-analysis revealed that, compared with routine nursing, nursing intervention could effectively control children’s fasting blood glucose (FBG) (
MD
=
−
1.68
, 95% CI (-2.19, -1.17),
P
<
0.00001
), 2 h postprandial blood glucose (2hPG) (
MD
=
−
4.01
, 95% CI (-4.70, -3.33),
P
<
0.00001
), fasting insulin (FINS) (
MD
=
−
7.42
, 95% CI (-10.63, -4.20),
P
<
0.00001
), 2 h postprandial insulin (2hINS) (
MD
=
−
58.18
, 95% CI (-103.24, -13.11),
P
=
0.01
), triglycerides (TG) (
MD
=
−
0.41
, 95% CI (-0.56, -0.25),
P
<
0.00001
), and systolic blood pressure (SBP) (
MD
=
−
8.85
, 95% CI (-14.67, -3.03),
P
=
0.003
) and effectively maintain patients’ blood glucose at a normal level (
MD
=
−
8.85
, 95% CI (-14.67, -3.03),
P
=
0.003
), where all the differences were statistically significant. Conclusion. The existing evidence showed that nursing intervention has a significant effect in controlling normal blood glucose and improving insulin utilization in children with type 2 diabetes, which can effectively improve the therapeutic effect on children.