The utility model relates to a reclaimable drilling completion integrated whipstock for multi-branch wells in oil industry, which comprises a fishing jaw 6, a whipstock main body 8, a righting block 11, a fishing tool 12, etc., wherein a spring 2 is fixed on a guiding axle 3, and a push board 4 is inserted into the guiding axle 3 and is connected and fixed with a sheath 7 through screws 5; one side of the push board 4 leans against the fishing jaw 6, the fishing jaw 6 is arranged in a guiding groove on the whipstock main body 8 and can glide up and down in the guide groove, and the righting block 11 is connected with the whipstock main body 8 through a shear pin 9; a loading part 10 is connected with the whipstock main body 8 through a shear pin 9. The utility model has the functions of windowing, drilling, cement concreting, casing milling, reclaiming, etc. The operation of fishing can be successfully carried out through a purpose-made fishing tool even if the whipstock is concreted by the cement, and a fishing jaw structure is adopted to carry out the reclaiming operation of the whipstock.