Real-time　hybrid　simulation　is　a　testing　method　that　combines　physical　experiments　and　numerical　simulations,　which　can　increase　the　dimensions　of　experimental　specimens　and　reduce　the　error　of　scaling　testing.　Currently,　the　maximum　degrees　of　freedom　of　numerical　models　are　7000　in　real　time.　To　improve　the　scale　of　numerical　simulation　in　real　time,　a　testing　framework　based　on　Python　and　graphics　processing　unit　was　proposed　in　this　paper.　The　maximum　degrees　of　freedom　of　the　numerical　model　exceeded　24,000　with　the　testing　framework.　The　testing　capacity　of　real-time　hybrid　simulation　was　significantly　improved　by　the　graphics　processing　unit　calculations.