This study is intended to construct the EFL Writing Self-efficacy Scale(WSES),a survey instrument to help promote research into college students’ writing self-efifcacy. The study,based on a literature review,hypothesizes a two-dimensional conceptual model of writing self-efifcacy,and develops the WSES including two factors of writing skills self-efifcacy and writing tasks self-efifcacy. It examines the psychometric properties of the WSES with two independent samples by both exploratory and conifrmatory factor analyses,which provide psychometric support for the initial conceptual model and provethe ideal reliability and validity of the WSES in measuring Chinese tertiary EFL students’ writing self-efifcacy.%本研究旨在编制我国大学生英语写作自我效能感量表以促进针对大学生写作自我效能感的研究。在文献综述的基础上，研究提出了包含写作技能效能感和写作任务效能感的二维构念的大学生英语写作自我效能感概念模型，据此编制了大学生英语写作自我效能感量表，并采用两个独立样本检验了量表的结构和质量。探索因子分析与验证性因子分析结果支持量表的概念模型，即大学生英语写作自我效能感是一个由学习者在英语写作中所具有的写作技能效能感知和写作任务效能感知两个维度构成的概念。研究结果表明，大学生英语写作自我效能感量表具有较高的信度和理想的效度，可作为大学生英语写作自我效能感的有效测量工具。
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