1. The content is different: the training fee invoice is mainly used to reimburse the training service fee, including training course fee, teaching material fee, training equipment fee and other related expenses. Accommodation invoice is mainly used to reimburse accommodation-related expenses, such as hotel accommodation.

2. Different reimbursement targets: training fee invoices are usually reimbursed by enterprises, institutions or individuals for the settlement of training expenses. Accommodation invoice is usually reimbursed by enterprises or individuals for the settlement of accommodation expenses.

3. Different scope of use: training fee invoices are mainly used for reimbursement and settlement of training-related expenses, and can be used as training expenses of enterprises or individuals for accounting. Accommodation invoice is mainly used for reimbursement and settlement of accommodation expenses, which can be used as part of company travel expenses or personal travel expenses.