我國財務會計準則公報第十號「存貨之會計處理準則」之新修訂，將存貨評價損益由原先之營業外損益轉列至銷貨成本項下。過去研究指出本業內盈餘項目持續性高於業外盈餘要素，因此，本研究首先驗證存貨評價損益之盈餘持續性是否低於營業損益。其次，探討存貨評價損益對分析師盈餘預測及其準確性的影響。亦即，分析師是否區別出存貨評價損益之持續性低於營業損益，及分析師是否對存貨評價損益產生錯誤之評價。
本研究結果發現：(1)存貨評價損益之持續性低於營業損益持續性；(2)分析師區別出不同盈餘要素之資訊內涵而給予存貨評價損益較低的評價權重；(3)分析師低估存貨評價損益之持續性，導致錯誤評價的現象。

On November 29, 2007, Taiwan’s Financial Accounting Standards Committee of the Accounting Research and Development Foundation revised SFAS No.10 “The Accounting for Inventory”. The new revised Taiwan’s SFAS No.10 reclassifies loss or gain on inventory valuation from non-operting item to the cost of goods sold. Prior literature indicates that the persistence of non-operating income items is lower than operating income items. Therefore, our study investigates whether the earnings persistence of loss or gain on inventory valuation is lower than operating income. Second, we examine whether analysts correctly distinguish the persistence of operating income from the one of loss or gain on inventory valuation.
The empirical results indicate that：(1) The persistence of loss or gain on inventory valuation is lower than operating income；(2) Financial analysts do distinguish between loss or gain on inventory valuation and operating income, and the forecasting weight on inventory revaluation is lower；(3) Financial analysts under-react to the information of inventory revaluation.

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