Legal analysis: 1. According to the principle of "whether one party contributes", natural fruits should be regarded as the same property as husband and wife if the other party contributes; If the other side of natural fruits does not make any contribution, it should be owned by individuals. Legal fruits, such as interest on bonds and savings, do not need to be paid by the other party, so they should be owned by individuals; If one party fails to make any contribution, the rent shall be owned by the individual.

2. The ownership of investment income, according to the provisions of China's Civil Code: "income from production and operation" should be owned by both husband and wife. Therefore, according to the law, the investment income should be owned by both husband and wife. The investment income here does not include value-added income.

3. The attribution of value-added is still based on the principle of "whether one party contributes or not". If the property such as real estate, stocks, bonds, funds, gold or antiques purchased by one party with personal property is partially increased by the materials and labor paid by the other party, for example, the decoration of the house will increase the value of the house, then the value-added part should be jointly owned by the husband and wife; However, if the above property only increases in value due to inflation or changes in market conditions, the value-added part should be owned by individuals.

Legal basis: Article 162 of the Civil Code of the People's Republic of China

The following property acquired by husband and wife during the marriage relationship is the common property of husband and wife, and belongs to both husband and wife:

(1) salary, bonus and labor remuneration;

(2) income from production, operation and investment;

(3) income from intellectual property rights;

(4) inherited or donated property, except as provided for in Item 3 of Article 163 of this Law;

(5) other property that should be owned by * * *.

husband and wife have equal rights to deal with the same property.

Article 163 The following property is the personal property of one spouse:

(1) the premarital property of one spouse;

(2) compensation or compensation obtained by one party for personal injury;

(3) property that is determined to belong to only one party in the will or gift contract;

(4) daily necessities exclusively used by one party;

(5) other property that should belong to one party.

Article 165 A man and a woman may agree that the property acquired during the marriage relationship and the property before marriage shall be owned by them, owned by them all or part of them, and owned by them part of them. The agreement shall be in writing. Where there is no agreement or the agreement is unclear, the provisions of Articles 162nd and 163rd of this Law shall apply.

the agreement between husband and wife on the property acquired during the marriage relationship and the property before marriage is legally binding on both parties.

The husband and wife agreed that the property acquired during the marriage relationship should be owned by each other. If the other party knows the agreement, the personal property of the husband or wife will be used to pay off the debts owed by the husband or wife.