With continuous development of national economy, hard alloy mine rock drilling bit blades are used a lot in the industries of railways, highways, mines, coal mines, real estates and the like. Over the sixty years, the drilling rate and anti-abrasion service life of a mine rock drilling bit are always what people expect to improve because the kind of drilling bit blade is usually used in the underground and cave conditions, wherein the underground and the cave conditions are very cold, wet or hot, and ventilation and dust exhausting are very poor. Therefore, obviously, anyone expects that the faster the cutting drilling of the mine rock drilling bit blade is, the better the blade will be, and the longer service life is, the better the blade will be. Unfortunately, over the sixty years, the performance of the drilling bit blade has no big changes. The invention provides a technology for preparing a diamond sandwich type hard alloy mine rock drilling blade. By the adoption of a novel artificial diamond sandwich technology, artificial diamond particles are evenly and deeply embedded into the working section of a common YG11C hard alloy mine blade in a high-pressure and mechanical mode. Moreover, high-temperature brazing is performed for solidifying, and the novel hard alloy mine rock drilling bit blade is prepared and low in cost, very high in drilling rate and very good in anti-abrasion performance. Therefore, working efficiency of the existing mine rock drilling blade is greatly improved. The technology and equipment used for the technology for preparing the diamond sandwich type hard alloy mine rock drilling blade are mature technologies of years. The technology for preparing diamond sandwich type hard alloy mine rock drilling blade is suitable for large-scale production, low in investment, very wide in domestic and foreign markets and suitable for investment and management of small enterprises, medium enterprises and micro enterprises.