Tujuan Pelatihan Pembuatan Poster Digital Tema Pemanasan Global untuk Siswa SMP di Samarinda antara lain adalah 1) agar pemahaman konsep siswa dapat meningkat dan 2) mengembangkan kreativitas siswa dalam membuat poster digital pada Materi Pemanasan Global. Namun, pada artikel ini, fokus membahas kaitannya dengan pemahaman konsep siswa. Sebanyak lima sekolah menengah pertama di Samarinda berpartisipasi dalam kegiatan pelatihan ini yang terdiri dari 15 siswa dan lima guru damping. Kegiatan pelatihan dilaksanakan selama empat hari secara luring dimulai tanggal 27 hingga 30 Juli 2022. Kegiatan hari pertama dilakukan penyajian materi pemanasan global. Hari kedua yaitu penyajian materi tentang bagaimana membuat poster secara umum dan dengan bantuan teknologi. Hari ketiga bimbingan dan praktik pembuatan poster tema pemanasan global, dan hari keempat yaitu presentasi hasil poster, serta pengumpulan poster akhir. Teknik pengambilan data yaitu Teknik tes dengan instrument berupa soal essay materi Pemanasan Global sebanyak delapan soal. Soal-soal tersebut diberikan kepada siswa pada awal (pre-test) dan akhir (post-test) kegiatan pelatihan. Data dikumpulkan, diolah dan dianalisis, hasilnya menunjukkan bahwa nilai rata-rata pemahaman konsep siswa sebelum kegiatan pelatihan yaitu 54,00 berada pada kategori cukup dan setelah kegiatan pelatihan yaitu 77,92 berada pada kategori baik. Perhitungan N-Gain diperoleh nilai 0,52 berada pada kategori sedang. The objectives of the "Global Warming Theme Digital Poster Making Training for Junior High School Students in Samarinda" are 1) students' understanding of concepts can increase and 2) develop students' creativity in making digital posters on Global Warming Topics. However, this article focuses on discussing its relation to students' understanding of concepts. A total of five junior high schools in Samarinda participated in this training activity consisting of 15 students and five assisted teachers. The training activity was conducted offline for four days, from 27 to 30 July 2022. The first day's action was to present a topic on global warming. The second day's activity was presenting the topic of making posters. The third day is the guidance and practice of making posters on the global warming theme; the fourth is presenting the poster results and the final poster collection. The data collection technique is a test technique with an essay question instrument for Global Warming with as many as eight questions. The questions were given to students at the beginning (pre-test) and the end (post-test) of the training activity. Data were collected, processed and analyzed, and the results showed that the average value of students' conceptual understanding before training activities was 54.00 (sufficient category), and after training was 77.92 (good category). The calculation of N-Gain obtained a value of 0.52 is in the moderate category.