INTISARILatar Belakang. Posyandu menjadi pelayanan kesehatan penting untuk bayi danbalita, kunjungan balita di posyandu berkaitan dengan peran ibu sebagai orangyang paling bertanggungjawab terhadap kesehatan balitanya, dipengaruhikunjungan ibu yaitu pendidikan, status pekerjaan, tingkat pengetahuan, dan umurbalita. Tujuan penelitian mengetahui hubungan pengetahuan ibu tentang posyandudengan frekuensi kunjungan balita ke Posyandu di Wilayah II PuskesmasNgoresan Surakarta.Metode. Analitik observasional dengan pendekatan cross sectional. Populasi ibubalita di Wilayah II Puskesmas Ngoresan sebanyak 184 orang. Pengambilansampel sejumlah 126 menggunakan probability sampling. Instrumen penelitianmenggunakan kuesioner. Uji statistik menggunakan Coefficient Contingencydengan a 5%.Hasil. Tingkat pengetahuan responden baik sebanyak 49,21% dan kunjunganteratur balita sebanyak 62,70%. Analisis data diperoleh nilai p = 0,000 dan r =0,422.Simpulan. Ada hubungan pengetahuan ibu tentang posyandu dengan frekuensikunjungan balita ke Posyandu di Wilayah II Puskesmas Ngoresan Surakarta.Kata kunci : Pengetahuan, Kunjungan Balita, PosyanduABSTRACTBackground. Posyandu becomes important health services for infants andchildren, children visitation in posyandu is related to the role of mother as themost responsible person for the children’s health, mother's visitation influencedby the education, employment status, level ofknowledge, and children’s age.Objective. To Investigate the correlation between the mother knowledge aboutposyandu with children frequency visitation At Posyandu In Region II NgoresanCommunity Health Center Surakarta.Method. Observational analytic with cross sectional approach.The population aremothers of children In Region II Ngoresan Community Health Centeras many as184 people. The sampling method used Probability Sampling. Large sample sizeof 126 people, the research instrument used questionnaires.The statistical testsused the Coefficient Contingency with a=5%.Result. Good knowledge as much as 49,21% of respondents either and visit asmuch as 49,21% regulary children visitation. On the p-value=0,000; (r)=0,422.Conclusions. There is a correlation between mother knowledge about posyandufrequency with children frequency visitation At Posyandu In Region II NgoresanCommunity Health Center Surakarta.Key words: Knowledge, children visitation , Posyandu