Objective To improve the mechanization and automation of tender coconut processing.Methods This paper designs a new tender coconut processing machine consisting of a compression rotating mechanism, a side-top integrated trimming mechanism, a clamping manipulator, and a bottom trimming mechanism. Mechanical analysis and calculation, 3D modeling, and finite element analysis are carried out on the most critical side-top integrated trimming mechanism to optimize the design scheme.Results The main factors influencing the trimming effect are ranked as the tool feed rate>tender coconut's rotation speed>tool trimming angle. The optimal parameter combination of the tender coconut processing machine is the tender coconut's rotation speed of 450 r/min, the tool feed rate of 1 mm/s, and the tool trimming angle of 16.7°.Conclusion The success rate of coconut green processing of the developed machine reaches 100%, with the efficiency reaching 100 pieces/h. Thus, the machine has high engineering application significance.