What is most needed for human beings in their life is happiness, because a man gets happiness, he gets satisfied, but it is not possible to do so. There was some loss after the creation of the universe, but Lord Shiva made all the shortcomings in mind and created the Tantra-Mantra so that humans could eliminate the diminution of their lives. One of these important teachings is the "Yantra Vidya" yantra is miraculous in itself, in power yantra's to accomplish hard and difficult tasks too. Yantra Tantam I have given this book the name because Yantra Shastra is of high quality in itself, and is like an unlimited ocean, as long as the numbers cannot be ended, the construction of the machinery cannot be ended is. In the yantra's, there is the dwelling of God, because the instruments contain the number, the seed, and the five elements, which is used to write the special type of ink and pen, gives the power to the machine, or say so That gives the place to the gods. The shape of the machine and the seeds hidden in them like honey, Shri, lan, ram, kryi, etc. differ from one another. The machines are written in special mushrooms, constellations, hora, etc. Using tools makes difficult tasks successful. Siddhi can also be obtained from the machines, instruments are helpful in achieving the Goddess's deity, the instrument is also the ghost destroyer. It is possible to recover the lost person or the Vaastu, through special work accomplishment, etc.