The invention belongs to the technical field of building construction foundation drilling tool application, and particularly discloses a spiral drilling and pouring device applied to pile top and pile cap integrated construction. The spiral drilling and pouring device comprises an automatic walking vehicle, a power distribution operation room, a three-door-head pulley, a main winch, a support, a horizontal head sliding member arranged on the support, a power transmission box connected with the horizontal head sliding member, a drilling rod connected with the power transmission box, a drilling rod blade arranged on the drilling rod, a cylindrical drilling sleeve arranged at the end of the drilling rod blade, an alloy drill bit arranged at the end of the drilling rod, and a limiting plate arranged on the support and matched with the cylindrical drilling sleeve in use, and the power distribution operation room, the three-door-head pulley, the main winch and the support are arranged on the automatic walking vehicle. The spiral drilling and pouring device has the advantages that the problem that existing long spiral drilling machines are low in efficiency and incapable of meeting production construction requirements on instability and prestress of integral structure is solved effectively, and pile body and pile cap concrete can be integrally formed quickly in a high-quality manner, so that raw materials are saved and production cost is lowered.