The wide application of legal big data has created new era opportunities for the development of the legal industry, and put forward higher requirements for the professional quality of legal personnel. At the current stage in China, the traditional law case teaching mode has some shortcomings in terms of teachers, teaching thinking, teaching methods, etc., which can no longer meet the training requirements of the big data era for compound legal talents. Propose more modern reform plans for traditional education models. This article briefly discusses the problems existing in the current teaching mode of law in universities and proposes corresponding solutions, aiming to help universities improve students' learning efficiency, improve teaching quality, and cultivate legal talents.