Developing countries like Thailand are much in need of a large amount of capital fund to develop country, since the countries themselves lack capital fund due to insufficient domestic savings and limited governmental budget. For this reason, the foreign loan policy has been put into use by the Royal Thai Government since 1901 to help finance various projects aimed towards the country’s economic and social development. Presently, the foreign loan project is an important part of the country’s development process of government agencies. To apply for this loan, the concerned Government agencies have to prepare the project and submit it to office of the National Economic and Social Development Board for consideration of appropriateness and suitability to the country’s economic and social development plan. For this reason, a request for Cabinet approval is required. After the request has been approved, the Ministry of Finance will proceed to apply for the loan on behalf of Thai Government. In the operation under such loan project , Government agencies will set up their own project coordinating unit to administer and supervise the loan project with an aim of compliance with approved plan under the supervision of Finance Ministry whose function is to contact loan institutions. The fund spent in operation under the loan project has been divided into three types, i.e. the fund from loan, counterpart fund and imprest cash advances to agencies for foreign loan project. Each type of fund spent has its own regulations and procedures for disbursement of fund. This causes problems in controlling the disbursement process and in making accounting records in Thai Government’s accounting system operated by Comptroller General Department, Ministry of Finance; Government agencies’ accounting system and Governmental foreign loan project’s accounting system operated by Government agencies. The foreign loan accounting system is a kind of fund Accounting System which has as its aim to clearly show the expenditures of the fund under foreign loan project, so that details can be collected for preparation of financial report to be submitted to loan institution. In this thesis a study has been made on the controlling system of foreign loan and problems arising from the system. Suggestions for solutions of such problems are also provided. Followings are the summary of the results of the study :- 1. Regarding the control of requests for payments of imprest cash advances to agencies for foreign loan project, it is found that, at present, the Comptroller General Department relies on the control through the use of a register. The author is of an opinion that records of accounting transactions should be made in the form of imprest cash advances to agencies for foreign loan project fund in order to clearly manifest the financial states of the fund. 2. The study reveals that the number of officials who administer the foreign loan section and the imprest cash advances to agencies for foreign loan project section of the Credit Division, Comptroller General Department, are insufficient. In addition, staff for various positions should be filled in by persons with suitable qualification while officials should be trained and developed to have sufficient knowledge for efficient work performance. 3. In the area of the Government agencies accounting recording, it has been found that procedures of accounting system in regard to the imprest cash advances to provincial agencies for foreign loan project has not yet been formulated by the Finance Ministry. The above-mentioned procedures should be set up and imposed on the provincial agencies project owners for processing. Additionally, the voucher control and follow-up systems including the methods of recording expenditures of the imprest cash advances to agencies for foreign loan project of both Governmental Central and Provincial agencies should be improved. 4. As regards the accounting system of the foreign loan project, it has been found that there are no procedures set up for recording the accounting transactions of the imprest cash advances to agencies for foreign loan project. Moreover, the budget preparation system of Thailand regarding the foreign loan project sometimes is not in line with plans written in the loan agreement, while the expenditure categories in the loan agreement do not correspond with the expenditure sections in the country’s budget which can create some confusion in the accounting system. For this reason, accounting system for loan projects should be improved as follow: 4.1 Methods of recording the accounting transactions of the imprest cash advances to agencies for foreign loan project should be set up. 4.2 The budget preparation system of Thailand regarding loan projects should be improved to make it in line with the plans written in loan agreement. 4.3 The expenditure categories in loan agreement should me made in line with the expenditure sections in Thailand’s budget. 5. In the area of administering the loan project, it has been found that loan projects run behind schedule due to negligence in operational planning and project evaluation. Therefore, prior to supporting the loan application, project managerial teams administrative capability should be taken into consideration. Also, before the project starts, all preparatory work should be ready and in the future, the foreign loan project appropriations should be included in Government budget so that control and follow-up of the expenditures of the Government agencies’ fund could be made more effectively to comply with the country’s master budget.