There are many delicious spicy crayfish shops in Harbin. Here are some recommended shops:

1. Harbin Crayfish: Located in Daoli District, Harbin, it is the most famous shop in Harbin. One of the crayfish shops. The spicy crayfish here is tender and rich in flavor and is deeply loved by diners.

2. Harbin Old Captain Spicy Crayfish: Located in Nangang District, Harbin, it is a restaurant that specializes in spicy crayfish. The spicy crayfish here is delicious and rich in flavor, and is very popular among diners.

3. Harbin Big Beard Spicy Crayfish: Located in Daowai District, Harbin City, it is a restaurant specializing in spicy crayfish. The spicy crayfish here is delicious and rich in flavor, and is deeply loved by diners.

4. Harbin Xinyuan Spicy Crayfish: Located in Nangang District, Harbin City, it is a restaurant specializing in spicy crayfish. The spicy crayfish here is tender and delicious, and is very popular among diners.

To sum up, there are many spicy crayfish shops in Harbin, and the shops recommended above are just some of them. If you want to taste more delicious food, it is recommended to try more different shops.