A method for manufacturing an extraction bag sheet, the extraction bag sheet being a water-permeable filter sheet on which tags bonded to a string are disposed at predetermined intervals in a lengthwise direction of the water-permeable filter sheet, the method comprising: step 1 which is a step of placing and holding the tags on a rotary supporting body at predetermined intervals; step 2 which is a threading step of threading the string into a continuous pattern by moving a threading member oscillatingly on a circumferential surface of the rotary supporting body having threading pins protruding from the circumferential surface; characterized in that step 3 is a bonding step of bonding the string to the tags strongly; step 4 is a step of supplying the water-permeable filter sheet onto the tags and the string placed on the rotary supporting body; step 5 is a bonding step of strongly bonding the string to the water-permeable filter sheet on the rotary supporting body; and step 6 is a bonding step of weakly bonding the tags to the water-permeable filter sheet on the rotary supporting body, wherein, in the bonding steps of step 3, step 5, and step 6, bonding heads that are moved oscillatingly about a center axis of the rotary supporting body and moved vertically relative to the circumferential surface of the rotary supporting body are used, and oscillation speeds, vertical movement speeds, and press-contact time periods of the bonding heads are controlled using an oscillation servo motor and a vertical movement servo motor; and the bonding heads can be freely adjusted in their speed and timing of the vertical movement relative to the circumferential surface of the rotary supporting body and in their speed in the rotation direction of the rotary supporting body, returning speed in the direction opposite to the rotation direction, and oscillation timing when they are oscillatingly moved together with the rotary supporting body. step 1 which is a step of placing and holding the tags on a rotary supporting body at predetermined intervals; step 2 which is a threading step of threading the string into a continuous pattern by moving a threading member oscillatingly on a circumferential surface of the rotary supporting body having threading pins protruding from the circumferential surface; characterized in that step 3 is a bonding step of bonding the string to the tags strongly; step 4 is a step of supplying the water-permeable filter sheet onto the tags and the string placed on the rotary supporting body; step 5 is a bonding step of strongly bonding the string to the water-permeable filter sheet on the rotary supporting body; and step 6 is a bonding step of weakly bonding the tags to the water-permeable filter sheet on the rotary supporting body, wherein, in the bonding steps of step 3, step 5, and step 6, bonding heads that are moved oscillatingly about a center axis of the rotary supporting body and moved vertically relative to the circumferential surface of the rotary supporting body are used, and oscillation speeds, vertical movement speeds, and press-contact time periods of the bonding heads are controlled using an oscillation servo motor and a vertical movement servo motor; and the bonding heads can be freely adjusted in their speed and timing of the vertical movement relative to the circumferential surface of the rotary supporting body and in their speed in the rotation direction of the rotary supporting body, returning speed in the direction opposite to the rotation direction, and oscillation timing when they are oscillatingly moved together with the rotary supporting body.