The more careful you are when taking the swim bladder, the more complete it will be. After taking it out, you should first wash the blood and internal organs attached to it, wash the nail buckle with a brush, and then tear off the inner and outer membranes of the swim bladder, otherwise it will be bitter or sour, and some even contain toxicity, but be careful not to hurt the swim bladder, and be careful not to break the gallbladder when taking the swim bladder. After washing, it is moldy, dried in the sun, and fish oil is sucked with an oil-absorbing cloth every few hours to prevent mosquitoes and birds, and it is recovered in time before it rains. After drying, it should be packaged, and moisture absorbent should be put in the bag to prevent mildew. You can find a company called Popular Food Supplement on the Internet, such as Taobao. This fish glue is an original product collected at home and abroad, with high cost performance. Taking fish glue from them can save a lot of money, and they will also teach you how to eat, what's the function and how to store it. In the particularly hot season, the newly made flower glue may be put in the refrigerator to prevent deterioration.