A manufacturing method of a liquid-permeable tube comprises: a step A for using an apparatus to gradually manufacture a first tube member for allowing liquid penetration in a production direction a step B for providing a second tube member shaped as a long tube and capable of allowing the liquid penetration, and folding the second tube member along a width direction of the second tube member and a step C for gradually fitting the folded second tube member and the first tube member with a manufactured section when the apparatus gradually manufactures the first tube member. Since the width of the folded second tube member may be smaller than an inner tube diameter of the first tube member in production, the second tube member may be inserted in the first tube member for output as a finished product together with the first tube member, so as to omit the subsequent troublesome fitting process thereby providing the advantage of increasing the production efficiency.一種滲液管之製造方法,包含步驟A:使用一設備沿一生產方向逐漸製造出一條能供液體穿透的第一管件;步驟B:提供一條呈長管狀且能供該液體穿透的第二管件,沿該第二管件的寬度方向摺疊該第二管件;及步驟C:於該設備逐漸製造該第一管件時,使摺疊後的該第二管件與該第一管件已被製造出的區段逐漸穿套在一起。由於該第二管件摺疊後的寬度能小於該第一管件生產時的內管徑而能穿入該第一管件中,並與該第一管件一同輸出為成品而能省略後續麻煩的穿套製程,故本發明具有能提高生產效率的優點。S1‧‧‧摺疊內管步驟S2‧‧‧前置作業步驟S3‧‧‧穿套生產步驟S4‧‧‧整理捲收步驟
