The invention relates to a method for producing paper pulp by oxidatively bursting wall of straw, comprising the following steps of: adding liquid ammonia, urea, hydrogen peroxide with the concentration of 35% and water into smashed straw, then stirring the materials to carry out oxidation-soaking treatment on the materials, conveying the materials subjected to the oxidation-soaking treatment into an oxidative bursting tank from a feeding hole of the oxidative bursting tank, sealing the feeding hole of the oxidative bursting tank, inputting saturated vapour into the oxidative bursting tank, conveying forced air into the oxidative bursting tank, completely opening a discharge hole of the oxidative bursting tank in three seconds, and instantaneously reducing the pressure in the oxidative bursting tank to normal pressure. The equipment comprises a straw smashing machine, a straw conveying device, a storage silo, a premixing machine, a material elevator, a rotary type feeding machine, theoxidative bursting tank, a rubbing silk separating machine, a first high-concentration pulping machine, a second high-concentration pulping machine and a sedimentation type reactor. The invention aims at providing a method and equipment with good quality, less water consumption, less waste water to be treated and no environmental pollution, for producing paper pulp by oxidatively bursting the wall of the straw.