ABSTRAKPenelitian ini bertujuan untuk mengetahui alasan diajukannya kasasi oleh Penuntut Umum terhadap putusan Pengadilan Tinggi Jawa Barat Nomor. 319/PID/2016/PT.BDG. Metode penelitian yang digunakan adalah penelitian hukum normatif. Pertimbangan Mahkamah Agung membatalkan putusan karena menganggap Judex Factie salah menerapkan hukum, tidak mempertimbangkan saksi yang meringankan terdakwa serta keterangan ahli dalam persidangan. Mahkamah Agung membatalkan putusan Pengadilan Tinggi Jawa Barat Nomor. 319/PID/2016/PT.BDG. Menurut pertimbangan keterangan terdakwa, korban seharusnya dinyatakan menderita luka ringan, namun Judex Factie telah keliru menyatakan sebagai luka berat. Pengajuan kasasi ini tidak dilaksanakan sesuai dengan ketentuan Undang-undang sesuai dengan Pasal 253 KUHAP.Kata kunci: kasasi, judex facie, pertimbangan hakim ABSTRACTThis study aims to determine the reason for the appeal by the Public Prosecutor against the decision of the West Java High Court Number. 319/PID/2016/PT.BDG. The research method used is normative legal research. Consideration of the Supreme Court overturned the verdict because it considered Judex Factie wrongly applied the law, did not consider witnesses who relied on the defendant and expert testimony in the trial. The Supreme Court overturned the decision of the West Java High Court Number. 319/PID/2016/PT.BDG. In consideration of the defendant's testimony, the victim should have suffered minor injuries, but Judex Factie had mistakenly stated that she was seriously injured. Submission of this appeal is not carried out in accordance with the provisions of the Law in accordance with Article 253 of the Criminal Procedure Code.Keywords: Cassation, Judex Facti, Consideration of the Judge