What responsibility should a husband bear for abandoning his seriously ill wife?

This behavior is abandonment.

The definition of abandonment: refers to the illegal behavior of one family member who has the obligation to support, support, and support, and the other party who needs support, support, and support, who fails to perform their obligations.

According to the Marriage Law: "Husbands and wives have the obligation to support each other." When one spouse fails to fulfill the obligation to support each other, the other party who needs support has the right to require the other party to pay alimony. The spouse with the ability to support must take the initiative to support and support the spouse who is disabled, seriously ill, or in financial difficulty.

In judicial practice, when dealing with issues of mutual support between husband and wife, more emphasis is placed on protecting the legitimate rights and interests of the woman.

At the same time, if the party who should pay alimony refuses to pay, the other party who needs alimony can obtain alimony through litigation. If one spouse is sick or unable to live independently, and the spouse who has the obligation to support refuses to support the spouse, and the circumstances are serious, it may constitute the crime of abandonment and shall bear criminal responsibility. According to Article 261 of the "Criminal Law": "Whoever refuses to support an old, young, sick or other person who has no ability to live independently shall be sentenced to fixed-term imprisonment of not more than five years, criminal detention or surveillance."

Recommendations :Apply for mediation to the accepting authority. If mediation fails, you can also file a lawsuit with the People's Court and require the other party to pay corresponding fees. You can also file a private prosecution in the People's Court to pursue the other party's criminal liability.