Echelon releasing method for underground solid anticorrosion and antiscale agents

The invention provides an echelon releasing method for underground solid anticorrosion and antiscale agents, and the method comprises the following steps of step 1: charging imidazoline inhibitor with a dissolving speed of 0.12g/cm *h, imidazoline inhibitor with a dissolving speed of 0.01g/cm *h, organic phosphonate antiscale agent and clay or kaolin into a tablet press according to a proportion of 0.4: 1.6: 1: 2 to a prepare solid anticorrosion and antiscale agent 1; step 2: charging the imidazoline inhibitor with the dissolving speed of 0.12g/cm *h, the imidazoline inhibitor with the dissolving speed of 0.05g/cm *h, organic phosphonate antiscale agent and clay or kaolin into a tablet press according to a proportion of 0.4: 1.6: 1: 2 to prepare a solid anticorrosion and antiscale agent 2; selecting the solid anticorrosion and antiscale agent 1 when the underground temperature is more than 50DEG C, and selecting the solid anticorrosion and antiscale agent 2 when the underground temperature is less than 50DEG C; and directly charging the solid anticorrosion and antiscale agents before a tubular post is arranged or charging the solid anticorrosion and antiscale agent into a sieve tube, which is hung under a pump, to charge the solid anticorrosion and antiscale agent into an oil well.