The declaration of abandoning inheritance cannot be revoked at will. According to the law, if the heir repents and gives up the inheritance before the disposal of the inheritance or during the litigation, the people's court will decide whether to recognize it according to the specific reasons put forward. After the disposal of the estate, the heirs will not recognize those who give up inheritance or go back on their word. Therefore, if the heir abandons his inheritance and goes back on his word, he can negotiate with other heirs first. If other heirs have always agreed to revoke the declaration of abandonment of inheritance, they can still inherit according to the original share. If no consensus can be reached, the people's court shall decide whether to agree to revoke the declaration of abandonment of inheritance according to specific reasons.

legal ground

Article 123 of the Civil Code: After inheritance begins, it shall be handled according to legal inheritance; If there is a will, it shall be inherited or bequeathed according to the will; If there is a legacy support agreement, it shall be handled in accordance with the agreement.