By analyzing the swallowing phenomenon, to develop easy food it is easy or drink to eat. The oral cavity modeling unit 10 forming an oral model 11, to set the organ characteristic setting unit 20 to set the organ characteristics of each mouth organ, and the organ motion setting section 30 to set the motion of each mouth organ, the physical properties of the food food a property setting unit 40, an input unit 81 for inputting a pseudo food in the mouth, the behavior of the motor and the simulated food 41 in the buccal organs in the oral cavity organs model 11, a motion analyzer 50 which analyzes using particle method, analysis From the results, food eaten ease, Evaluation and result recording section 83B for recording the ease of evaluation results drinking, by setting the manufacturing conditions so as to have the physical properties the physical properties of the food to be proper on the basis of the evaluation results appropriately and food experimental result recording unit 83C that records the result of performing the trial, on the basis of the food experimental result recording unit 83C experimental results obtained are recorded in the manufacturing conditions for the physical properties determined as proper in the physical property determining unit 70 the physical properties of the food I and a production condition determining section 84 for determining a.嚥下現象を解析して、食べ易い又は飲み易い食品を開発する。口腔モデル11を形成する口腔モデリング部10と、各口腔器官の器官特性を設定する器官特性設定部20と、各口腔器官の運動を設定する器官運動設定部30と、食品の物性を設定する食品物性設定部40と、擬似食品を口腔に入力する入力部81と、口腔器官モデル11における各口腔器官の運動と擬似食品41の挙動を、粒子法を用いて解析する運動解析部50と、解析結果から、食品の食べ易さ、飲み易さの評価結果を記録する評価結果記録部83Bと、評価結果に基づいて適正とされる食品の物性物性を有するように製造条件を適宜に設定して試作を行なった結果を記録する食品試作結果記録部83Cと、食品試作結果記録部83Cに記録された試作結果に基づき、食品の物性を物性決定部70で適正と決定された物性にする製造条件を決定する製造条件決定部84とを備える。
