Prajna is the mother of all Buddhas. Therefore, Buddhist disciples who wish to achieve supreme Bodhi must practice Prajna. "Maha Prajna Paramita" Volume 14: "Prajna Paramita can give birth to all Buddhas"， "Great Prajna Paramita Sutra" Volume 479: "If Bodhisattvas and Mahasattvas wish to attain all wisdom, they should learn Prajna Paramita." Prajna is the reason for attaining the fruit of Buddhahood. Although all Buddhist practitioners are familiar with it, they are more eager to explore its profound meaning. Therefore, practitioners should study Prajna deeply. Buddhism was introduced to China from India, and since the Han Dynasty , a large number of Sanskrit languages have been translated into Chinese. For the spread of "prajna" thought, the "Diamond Sutra" is the most representative and most widely circulated "prajna" sutra. The Diamond Sutra has been widely circulated in Chinese Buddhism, and it has been used for more than 1,600 years. Therefore, almost every Buddhist disciple has some experience and comprehension. So far, there have been commentaries in all dynasties, with a total of nearly 1,000 volumes of books, which have had a profound impact on Chinese Buddhism. However, the cognition of the "Diamond Sutra" is due to the difference in the perspectives of the masters, resulting in the interpretation of "a hundred flowers blooming" and "various schools contending". This dissertation aims at the essentials of the practice of the Diamond Sutra and uses Jiang Weinong's book "The Diamond Sutra Lectures" for in-depth analysis, comparison and induction, hoping to have a correct understanding of "Prajna" and grasp the essentials of practice. , and then it can be helpful to study Buddhism. In the "prajna" thinking, in addition to accurately grasping the essentials of the practice, the two methods of "prajna" and "recitation of Buddha" are not only mutually exclusive, but can enhance each other and complement each other. In the "Diamond Sutra Lectures", the six senses cannot be described, but the "Amitabha Sutra" completely describes the six senses in the Ultimate Bliss World. It seems to be opposite, but it is actually the same, and it shows the sublime realm of the Pure Land. Worrying about sentient beings, arousing thoughts, not leaving the six dusts, the wonder of the Pure Land Dharma Door is changing the minds of sentient beings. Visualizing the six objects in the world of ultimate bliss means that there is no emptiness; thus, the six objects that are freed from the five turbidities are no longer existing.The "Diamond Sutra Lecture Notes" clearly mentions the knowledge of "contemplation of prajna", "reality of prajna" and "recitation of Buddha" ingeniously combining the two methods of "prajna" and "pure land", so that the order of practice and contemplation complements each other and achieves perfect harmony . Buddhism has been circulating in China for more than 2,000 years, and the method of "reciting Buddha" has prevailed. However, with the changes of the times, its meaning has been disto
