Legal analysis: The difference is that (1) deposit is a kind of security interest and a special form of pledge guarantee, that is, in order to guarantee the performance of the debt, the debtor or a third party transfers a certain amount of money or equivalent to the creditor for possession, and when the debtor fails to perform the debt under the contract, the creditor can get priority compensation from the deposit. Deposit is a customary way in the process of non-governmental transactions, and this kind of guarantee is neither explicitly recognized nor prohibited by our laws. (2) The term "security deposit" refers to the money retained by one or both parties to the contract or deposited in a third party to ensure the performance of the contract. This concept is widely used, such as contract bond, performance bond in bidding, bond in futures trading, and even bond in bail pending trial. There are two popular forms of deposit in real economic life: one is the deposit that the parties to a contract ask the other party to provide in order to ensure the realization of their creditor's rights. Another form of deposit is the deposit paid by both parties to a mutually recognized third party to ensure the performance of their respective obligations when the contract is established.

Legal basis: People's Republic of China (PRC) Contract Law.

Article 60 The parties shall fully perform their obligations as agreed.

The parties shall abide by the principle of good faith and fulfill the obligations of notification, assistance and confidentiality according to the nature, purpose and trading habits of the contract.

Article 61 After the contract comes into effect, the parties have not agreed or clearly agreed on the quality, price or remuneration, place of performance, etc. They can supplement the agreement; If a supplementary agreement cannot be reached, it shall be determined in accordance with the relevant provisions of the contract or trading habits.

Article 62 Where the parties have not clearly agreed on the contents of the contract and cannot be determined according to the provisions of Article 61 of this Law, the following provisions shall apply:

(a) the quality requirements are not clear, in accordance with national standards and industry standards; If there is no national standard or industry standard, it shall be implemented according to the usual standard or the specific standard that meets the purpose of the contract.

(2) If the price or remuneration is not clear, it shall be performed according to the market price at the place of performance when the contract is concluded; If government pricing or government-guided pricing should be implemented according to law, it shall be implemented in accordance with the provisions.

(3) Where the place of performance is unclear, if payment is made in currency, it shall be performed at the place where the party receiving the currency is located; Where real estate is delivered, it shall be performed at the place where the real estate is located; Other targets shall be performed at the place where the party performing the obligations is located.

(4) If the time limit for performance is not clear, the debtor may perform at any time, and the creditor may also request performance at any time, but the other party shall be given the necessary preparation time.

(5) If the method of performance is not clear, it shall be performed in a way conducive to the realization of the purpose of the contract.

(six) if the burden of performance expenses is not clear, it shall be borne by the party performing the obligation.