This study aims to analyze the feasibility of audio-visual media based on project-based learning assisted by the Adobe Flash CS4 application on electrolyte and non-electrolyte solutions and the effectiveness of audio-visual media based on project-based learning for class X Electrolyte and non-electrolyte solutions. The research method used in this study refers to Borg and Gall, which was carried out at the Bina Bersaudara Private High School in Kec.Selesai, which is located on Jalan Jamin Ginting, Kuta Parit, Kec. Done Langkat Regency. Class X IPA I and Class X IPA II Academic years 2022-2023 There are 40 (forty) students in class X IPA 1 and students in class X IPA II, totaling 32 (thirty-two) students from SMA Bina Bersaudara Kec. The results showed that: (1) project-based learning-based audio-visual media assisted by the Adobe Flash CS4 application that has been tested has obtained a percentage value of 86% with the criteria of "very feasible" to be used in the material for electrolyte solutions and non-electrolyte solutions for class X IPA. and (2) Audio-visual media based on project-based learning assisted by the Adobe Flash CS4 application, which has been tested, gets a score of 95% with the criteria of "effective" and obtains t table -2172 < t count < 2.172 so that Ho is rejected and Ha is accepted. It is concluded that there is a difference in student learning outcomes using learning media that do not use media that are used in the material for electrolyte solutions and non-electrolyte solutions for class X IPA.