Abstrak: Perilaku CERDIK merupakan tindakan preventif agar lansia tetap sehat, bugar, dan bebas dari penyakit tidak menular (PTM) dan penyakit infeksi. Tujuan pengabdian untuk meningkatkan pengetahuan dan perilaku CERDIK, mencegah serta menghindari terjadinya PTM dan penyakit infeksi pada lansia. Metode kegiatan berupa penyuluhan dan pemeriksaan kesehatan bertempat di Desa Sumberporong selama 3 bulan (Juni-Agustus 2022), melibatkan 35 lansia. Hasil kegiatan; terjadi peningkatan pengetahuan dan perilaku dalam menjalankan perilaku CERDIK pada peserta. Pengetahuan peserta saat pre-test sebesar 60% baik dan post-test sebesar 85% baik. Pada pemeriksaan kesehatan terjadi penurunan rerata tekanan darah dari (148,05/90,34 mmHg) menjadi (138,35/82,94 mmHg), rerata kadar gula darah dari (164,8mg/dL) menjadi (152,74mg/dL), dan rerata kadar kolesterol total dari (195,34 mg/dL) menjadi (180,32 mg/dL). Kesimpulan kegiatan pengabdian kepada masyarakat Gerakan Perilaku CERDIK berhasil meningkatkan pengetahuan dan perilaku hidup sehat, dibuktikan terjadinya penurunan rerata tekanan darah dan kadar glukosa darah pada peserta kegiatan. Diharapkan lansia tetap melakukan perilaku CERDIK sebagai tindakan preventif pada PTM dan penyakit infeksi.Abstract: CERDIK behavior is a preventive measure so that the elderly remain healthy, fit and free from non-communicable diseases (NCDs) and infectious diseases. The aim of the service is to increase CERDIK knowledge and behavior, prevent and avoid the occurrence of NCDs and infectious diseases in the elderly. The activity method is in the form of counseling and health checks taking place in Sumberporong Village for 3 months (June-August 2022), involving 35 elderly people. Activity results; there was an increase in knowledge and behavior in carrying out CERDIK behavior among participants. Participants' knowledge during the pre-test was 60% good and post-test was 85% good. During the health examination, there was a decrease in the average blood pressure from (148.05/90.34 mmHg) to (138.35/82.94 mmHg), the average blood sugar level from (164.8mg/dL) to (152.74mg/dL), and the average total cholesterol level from (195.34 mg/dL) to (180.32 mg/dL). Conclusion: The community service activities of the CERDIK Behavior Movement succeeded in increasing knowledge and healthy living behavior, as evidenced by a decrease in the average blood pressure and blood glucose levels in activity participants. It is hoped that the elderly will continue to carry out CERDIK behavior as a preventive measure against NCDs and infectious diseases.