Based on the results of the present investigation, we conclude that the types of gels and their preparation conditions have profound effect on their gel characteristics, thus influencing the structure and the selected quality attributes of microwave vacuum dried products derived from those gels. Mixed starch with fish dough with medium moisture content can be formed into a homogenous co-gel with good springiness and cohesiveness and medium hardness at the high severity of the thermal treatment, which can be transformed to a uniformly expanded, porously structural snack food product with good crispness and satisfied sensory quality by microwave vacuum drying technique. Although the higher severity of the thermal treatment, viz.,100 C for 60 min, favors more expansion and better sensory quality, it leads to an excessively adhesive gel, thus causing poor cutting efficiency. Further research is required to ascertain how the ratio of protein and starch, salt and cold storage might affect the quality