Processing device and processing method

A processing device for subjecting a material fluid to a process while controlling a processing temperature of the material fluid, comprising:

• a processing member into which the material fluid is guided and subjected to the process inside;
• and
• a processing bath that accommodates said processing member and stores a processing product provided by the process in said processing member, wherein
• said processing member has at least one minute flow passage provided inside said processing member, the minute flow passage inside which the material fluid is circulated, and at least one heat medium flow passage provided inside said processing member, the heat medium flow passage inside which a heat medium having a temperature different from the temperature of the material fluid circulated in the at least one minute flow passage is circulated, and
• the at least one minute flow passage and the at least one heat medium flow passage are isolated from each other in such a manner that heat exchange is capable of being performed between the material fluid flowing through the minute flow passage and the heat medium flowing through the heat medium flow passage.