The invention provides a production technology of an easily-tearing packaging bag. The technology comprises the following steps that (1) plant fiber paper is arranged in a covering mode; (2) cooling is carried out; (3) printing is carried out; (4) film covering is carried out; (5) oil coating is carried out; (6) hot stamping is carried out; (7) the packaging bag is packaged; (8) mounting is carried out; (9) sealed edge folding is carried out; (10) line cutting is carried out; and (11) after an object is contained in an unsealed packaging bag, the back face of a convex strip paper is sealed on the inner side of the back face of the bag body in a hot-seal mode, the top end of a bag body is subjected to hot sealing, and the temperature of hot sealing is 120-180 DEG C. According to the production technology, a flat-pressing technology is used, production cost can be lowered, subsection cooling is set, so that buffering cooling effect is achieved first, time is saved, efficiency is improved, the bonding degree of the plant fiber paper and a PE film is improved, cost can be lowered by room temperature cooling, the defective rate of products is lowered, the cost of raw materials is saved, namely cost increasing caused by tone-determining layout page using is avoided, cost increasing caused by hard plastic pulling strip using is avoided, and accordingly resource waste and environment pollution are reduced.