Fracturing fracture forming method based on chemical reaction and reservoir fracturing transformation method

The invention provides a chemical reaction-based fracture forming method and a reservoir fracturing transformation method. The method comprises the following steps: S1, forming a main fracture in a stratum in a hydraulic fracturing manner; s2, a first chemical agent is introduced into the main fracture in a slug form; s3, fracturing fluid is introduced into the main fracture; s4, after a period of time, a second chemical agent is introduced into the main fracture, after the second chemical agent enters the stratum and is mixed with the first chemical agent, a rapid heating reaction is performed, explosion is initiated, and small fractures are generated; s5, repeating the steps S2 to S4; s6, a complex fracture net is manufactured through second-time hydraulic fracturing; both the first chemical agent and the second chemical agent can be oxidizing agents or reducing agents and are not oxidizing agents or reducing agents at the same time. The reservoir fracturing transformation method comprises the fracturing cr