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对杂交鹅掌楸制备溶解浆的蒸煮工艺条件进行了优化，为其成为制备溶解浆新材料提供了理论支持。在0.5%酸浓、170℃、液比1∶3.5条件下稀酸预水解90 min，而后在蒸煮条件为保温温度165℃、液比1∶4、保温时间90 min、用碱量19%（Na2O计）、硫化度20%下对木片进行硫酸盐法蒸煮，接着进行氧脱木质素和D0EPD1漂序的ECF漂白，然后进行稀酸洗涤，最终制得粘度为8.5 MPa·s、?-纤维素为96.2%、灰分为0.04%、聚戊糖为2.58%、白度为89.1%ISO、铁离子含量为12.5 mg/kg、二氯甲烷抽出物为0.05%的一等品溶解浆。“,”The cooking conditions of Liriodendron Hybrids for preparing dissolving pulp were optimized. It provided theoretical support for Liriodendron Hybrids becoming a new material to produce dissolving pulp. In the stage of pre-hydrolysis, the conditions were controlled followed by acid concentration of 0.5%, temperature of 170℃, liquor ratio of 1∶3.5 and hydrolysis time of 90 min. In the following cooking period, holding temperature of 165℃, holding time of 90 min, liquor ratio of 1∶4, alkali charge of 19%(Na2O) and sulfidity of 20%was set for cooking chips by kraft method. Oxygen delignification, ECF bleaching process of D0EpD1 and following dilute acid washing was operated, and dissolving pulp with first grade quality was obtained. The dissolving pulp had the property with viscosity of 8.5 MPa·s,α-cellulose content of 96.2%, ash content of 0.04%, pentosan component of 2.58%, brightness of 89.1%ISO, iron ion proportion of 12.5 mg/kg.