As a family of two-dimensional functional materials,layered double hydroxides(LDHs) have the characteristics of adjustable lamellar element type and proportion,variable interlamellar anion,controllable particle size and thickness,providing a robust platform for photo/electro/thermal-catalysis.With the continuous progress of materials science,the synthesis of LDHs is becoming more and more refined.Herein,to achieve the fine preparation of LDHs materials,especailly for the no-chemical/material researchers,we successfully assembled the automatic synthesis device and wrote corresponding computer software to control this device,and the automatic synthesis of bulk and monolayer LDHs nanosheets on a laboratory scale can be realized.This work paves a new labor-saving way for the fine synthesis of LDHs nanostructures,further improving the development of LDHs-based materials.